Ian Jauslin
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authorIan Jauslin <ian.jauslin@rutgers.edu>2023-03-09 11:48:20 -0500
committerIan Jauslin <ian.jauslin@rutgers.edu>2023-03-09 11:48:20 -0500
commit6086bbc8826d558bedab6933913c6793850470fb (patch)
tree632f32f7e1e50f58a6a57a0dd22f1fdfccf54730
As presented at Rutgers on 2023-03-09HEADv1.0master
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diff --git a/Jauslin_Rutgers_2023.tex b/Jauslin_Rutgers_2023.tex
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+\documentclass{ian-presentation}
+
+\usepackage[hidelinks]{hyperref}
+\usepackage{graphicx}
+\usepackage{array}
+\usepackage{xcolor}
+
+
+\definecolor{ipurple}{HTML}{4B0082}
+\definecolor{iyellow}{HTML}{DAA520}
+\definecolor{igreen}{HTML}{32CD32}
+\definecolor{iblue}{HTML}{4169E1}
+\definecolor{ired}{HTML}{DC143C}
+
+\definecolor{highlight}{HTML}{981414}
+
+\begin{document}
+\pagestyle{empty}
+\hbox{}\vfil
+\bf\Large
+\hfil Interacting Bosons at intermediate densities\par
+\vfil
+\large
+\hfil Ian Jauslin
+\normalsize
+\vfil
+\hfil\rm joint with {\bf Eric A. Carlen}, {\bf Elliott H. Lieb}\par
+\vfil
+arXiv:{\tt\ \parbox[b]{6cm}{
+ \href{https://arxiv.org/abs/1912.04987}{1912.04987}\
+ \href{https://arxiv.org/abs/2010.13882}{2010.13882}\par
+ \href{https://arxiv.org/abs/2011.10869}{2011.10869}\
+ \href{https://arxiv.org/abs/2202.07637}{2202.07637}\par
+ \href{https://arxiv.org/abs/2302.13446}{2302.13446}\
+ \href{https://arxiv.org/abs/2302.13449}{2302.13449}
+}}
+\hfill{\tt \href{http://ian.jauslin.org}{http://ian.jauslin.org}}
+\eject
+
+\setcounter{page}1
+\pagestyle{plain}
+
+\title{Bosons}
+\begin{itemize}
+\item Quantum particles are either {\color{highlight}Fermions} or {\color{highlight}Bosons} (in 3D).
+
+\item Fermions: electrons, protons, neutrinos, etc...
+
+\item Bosons: photons, Helium atoms, Higgs particle, etc...
+
+\item At low temperatures: inherently {\color{highlight}quantum} behavior: e.g. {\color{highlight}Bose-Einstein condensation}, superfluidity, quantized vortices, etc...
+
+\item Difficult to handle mathematically: usual approach {\color{highlight}effective theories}.
+
+\item The connection between the original model and the effective theory is, in most cases, poorly understood.
+\end{itemize}
+\vfill
+\eject
+
+\title{Repulsive Bose gas}
+\begin{itemize}
+ \item Potential: {\color{highlight}$v(r)\geqslant 0$}, {\color{highlight}$\hat v\geqslant 0$} and {\color{highlight}$v\in L_1(\mathbb R^3)$}, on a torus of volume $V$:
+ $$
+ H_N:=
+ -\frac12\sum_{i=1}^N\Delta_i
+ +\sum_{1\leqslant i<j\leqslant N}v(|x_i-x_j|)
+ $$
+ \vskip-5pt
+ \item Ground state ({\color{highlight}zero temperature}): $\psi_0$, energy $E_0$.
+
+ \item Observables in the {\color{highlight}thermodynamic limit}: for instance, ground state energy per particle
+ $$
+ e_0:=\lim_{\displaystyle\mathop{\scriptstyle V,N\to\infty}_{{\color{highlight}\frac NV=\rho}}}\frac{E_0}N
+ .
+ $$
+
+ \item Main difficulty: dealing with the interactions.
+\end{itemize}
+\vfill
+\eject
+
+\title{Known results}
+\begin{itemize}
+ \item {\color{highlight}Low density}: \href{https://doi.org/10.1103/PhysRev.106.1135}{Lee-Huang-Yang} formula
+ $$
+ e_0=2\pi\rho a\left(1+\frac{128}{15\sqrt\pi}\sqrt{\rho a^3}+o(\sqrt{\rho a^3})\right)
+ $$
+ proved:
+ \href{https://doi.org/10.1103/PhysRevLett.80.2504}{[Lieb, Yngvason, 1998]},
+ \href{https://doi.org/10.1007/s10955-009-9792-3}{[Yau, Yin, 2009]},
+ \href{https://doi.org/10.4007/annals.2020.192.3.5}{[Fournais, Solovej, 2020]},
+ \href{https://doi.org/10.1017/fms.2021.66}{[Basti, Cenatiempo, Schlein, 2021]}.
+
+ \item {\color{highlight}High density}: Hartree energy:
+ $$
+ e_0\sim\frac\rho2\int v
+ $$
+ proved: \href{https://doi.org/10.1103/PhysRev.130.2518}{[Lieb, 1963]}.
+\end{itemize}
+\vfill
+\eject
+
+\title{The Simplified approach: proof of concept}
+For $v(x)=e^{-|x|}$: {\color{ipurple}Simplified approach}, {\color{iyellow}LHY}, {\color{igreen}Hartree}, {\color{ired}Monte Carlo}
+
+\hfil\includegraphics[height=5.5cm]{energy.pdf}
+\vfill
+\eject
+
+\title{The Simplified approach}
+\begin{itemize}
+ \item \href{https://doi.org/10.1103/PhysRev.130.2518}{[Lieb, 1963]},
+ \href{https://arxiv.org/abs/2302.13446}{[Jauslin, 2023]}.
+
+ \item Integrate $H_N\psi_0=E_0\psi_0$:
+ $$
+ \int dx_1\cdots dx_N\
+ \left(
+ -\frac12\sum_{i=1}^N\Delta_i\psi_0
+ +\sum_{1\leqslant i<j\leqslant N} v(|x_i-x_j|)\psi_0
+ \right)
+ =E_0\int dx_1\cdots dx_N\ \psi_0
+ $$
+ \item Therefore,
+ $$
+ \frac{N(N-1)}2\int dx_1dx_2\ v(x_1-x_2)\frac{\int dx_3\cdots dx_N\ \psi_0}{\int dy_1\cdots dy_N\ \psi_0}
+ =E_0
+ $$
+\end{itemize}
+\vfill
+\eject
+
+\title{The Simplified approach}
+\begin{itemize}
+ \item {\color{highlight}$\psi_0\geqslant 0$}, so it can be thought of as a probability distribution.
+ \item $g_n$: {\color{highlight}correlation functions} of $V^{-N}\psi_0$
+ $$
+ g_n(x_1,\cdots,x_n):=\frac{V^n\int dx_{n+1}\cdots dx_N\ \psi_0(x_1,\cdots,x_N)}{\int dy_1\cdots dy_N\ \psi_0(y_1,\cdots,y_N)}
+ $$
+ \item Thus,
+ $$
+ \frac{E_0}N=\frac{N-1}{2V}\int dx\ v(x)g_2(0,x)
+ $$
+\end{itemize}
+\vfill
+\eject
+
+\title{Hierarchy}
+\vskip-10pt
+\begin{itemize}
+ \item Equation for $g_2$: integrate $H_N\psi_0=E_0\psi_0$ with respect to $x_3,\cdots,x_N$:
+ $$
+ \begin{array}{>\displaystyle l}
+ -\frac12(\Delta_x+\Delta_y) g_2(x,y)
+ +\frac{N-2}V\int dz\ (v(x-z)+v(y-z))g_3(x,y,z)
+ \\[0.5cm]\hfill
+ +v(x-y)g_2(x,y)
+ +\frac{(N-2)(N-3)}{2V^2}\int dzdt\ v(z-t)g_4(x,y,z,t)
+ =E_0g_2(x,y)
+ \end{array}
+ $$
+
+ \item {\color{highlight}Infinite hierarchy} of equations.
+\end{itemize}
+\vfill
+\eject
+
+\title{Factorization assumption}
+\begin{itemize}
+ \item Factorization {\color{highlight}assumption} (clustering property): for $n=3,4$,
+ $$
+ g_n(x_1,\cdots,x_n)=\prod_{1\leqslant i<j\leqslant n}(1-u_n(x_i-x_j))
+ ,\quad
+ u_n\in L_1(\mathbb R^3)
+ $$
+
+ \item Consistency condition:
+ $$
+ \int \frac{dx_3}V\ g_3(x_1,x_2,x_3)=g_2(x_1,x_2)
+ ,\quad
+ \int \frac{dx_3}V\frac{dx_4}V\ g_4(x_1,x_2,x_3,x_4)=g_2(x_1,x_2)
+ $$
+
+ \item Remark: in general,
+ $$
+ \int \frac{dx_4}V\ g_4(x_1,x_2,x_3,x_4)\neq g_3(x_1,x_2,x_3)
+ $$
+\end{itemize}
+\vfill
+\eject
+
+\title{Factorization assumption}
+\begin{itemize}
+ \item {\bf Lemma}
+ \href{https://doi.org/10.1103/PhysRev.130.2518}{[Lieb, 1963]},
+ \href{https://arxiv.org/abs/2302.13446}{[Jauslin, 2023]}:
+ Under the Factorization assumption and the consistency condition,
+ $$
+ u_3(x-y)=u(x-y)+\frac1V(1-u(x-y))\int dz\ u(x-z)u(z-y)+O(V^{-2})
+ $$
+ $$
+ u_4(x-y)=u(x-y)+\frac2V(1-u(x-y))\int dz\ u(x-z)u(z-y)+O(V^{-2})
+ $$
+
+ \item With $u(x):=1-g_2(0,x)$.
+\end{itemize}
+\vfill
+\eject
+
+\title{{\color{ipurple}Big equation}}
+\begin{itemize}
+\item In the thermodynamic limit,
+ $$
+ -\Delta u(x)
+ =
+ (1-u(x))\left(v(x)-2\rho K(x)+\rho^2 L(x)\right)
+ $$
+ $$
+ K:=
+ u\ast S
+ ,\quad
+ S(y):=(1-u(y))v(y)
+ $$
+ $$
+ L:=
+ u\ast u\ast S
+ -2u\ast(u(u\ast S))
+ +\frac12
+ \int dydz\ u(y)u(z-x)u(z)u(y-x)S(z-y)
+ .
+ $$
+
+ \item {\color{ipurple}``Big'' equation}:
+ $$
+ L\approx
+ u\ast u\ast S
+ -2u\ast (u(u\ast S))
+ $$
+\end{itemize}
+\vfill
+\eject
+
+\title{{\color{iblue}Simple equation}}
+\vskip-10pt
+\begin{itemize}
+ \item Further approximate $S(x)\approx\frac{2e}\rho\delta(x)$ and $u\ll 1$.
+ \item {\color{iblue}Simple equation}:
+ $$
+ -\Delta u(x)=(1-u(x))v(x)- 4eu(x)+2e\rho\ u\ast u(x)
+ $$
+ $$
+ e=\frac\rho2\int dx\ (1-u(x))v(x)
+ $$
+ \item {\bf Theorem 1}:
+ If $v(x)\geqslant 0$ and $v\in L_1\cap L_2(\mathbb R^3)$, then the {\color{iblue}simple equation} has an {\color{highlight}integrable solution} (proved constructively), with $0\leqslant u\leqslant 1$.
+\end{itemize}
+\vfill
+\eject
+
+\title{Energy for the {\color{iblue}simple equation}}
+\vskip-10pt
+\begin{itemize}
+ \item {\bf Theorem 2}:
+ $$
+ \frac{e}{\rho}\mathop{\longrightarrow}_{\rho\to\infty}\frac12\int dx\ v(x)
+ .
+ $$
+ This coincides with the {\color{highlight}Hartree energy}.
+ \item {\bf Theorem 3}:
+ $$
+ e=2\pi\rho a\left(1+\frac{128}{15\sqrt\pi}\sqrt{\rho a^3}+o(\sqrt\rho)\right)
+ $$
+ This coincides with the {\color{highlight}Lee-Huang-Yang prediction}.
+\end{itemize}
+\vfill
+\eject
+
+\title{Energy}
+$v(x)=e^{-|x|}$, {\color{ipurple}Big equation}, {\color{ired}Monte Carlo}
+
+\hfil\includegraphics[height=5.5cm]{energy.pdf}
+\vfill
+\eject
+
+\title{Radial distribution function}
+\begin{itemize}
+ \item
+ {\color{highlight}Two-point correlation}:
+ $$
+ C_2(y-z)=\sum_{i,j}\left<\psi_0\right|\delta(y-x_i)\delta(z-x_j)\left|\psi_0\right>
+ .
+ $$
+ \item
+ {\color{highlight}Radial distribution}: spherical average and normalization:
+ $$
+ G(r):=\frac1{\rho^2}\int\frac{dy}{4\pi r^2}\ \delta(|y|-r)C_2(y)
+ .
+ $$
+
+ \item
+ Compute $C_2$ using
+ $$
+ C_2(x)=2\rho\frac{\delta e_0}{\delta v(x)}
+ .
+ $$
+\end{itemize}
+\vfill
+\eject
+
+\title{Radial distribution function}
+$v(x)=16e^{-|x|}$, $\rho=0.02$ {\color{ipurple}Big equation}, {\color{ired}Monte Carlo}
+
+\hfil\includegraphics[height=5.5cm]{2pt.pdf}
+\vfill
+\eject
+
+\title{Radial distribution function}
+$v(x)=8e^{-|x|}$, $\rho=10^{-5}$-$10^{-1}$
+
+\hfil\includegraphics[height=5.5cm]{2pt_rho.pdf}
+\vfill
+\eject
+
+\title{Radial distribution function}
+$v(x)=8e^{-|x|}$, maximal value as a function of $\rho$:
+
+\hfil\includegraphics[height=5.5cm]{2pt_max.pdf}
+\vfill
+\eject
+
+\title{Liquid behavior}
+\begin{itemize}
+ \item Maximum above $1$: there is a length scale at which it is {\color{highlight} more probable} to find pairs of particles.
+ \item {\color{highlight}No} long range order.
+ \item {\color{highlight}Short-range order}: {\color{highlight}Liquid}-like behavior.
+\end{itemize}
+\vfill
+\eject
+
+\title{Structure factor}
+\begin{itemize}
+ \item
+ {\color{highlight}Structure factor}: Fourier transform of $G$:
+ $$
+ S(|k|):=1+\rho\int dx\ e^{ikx}(G(|x|)-1)
+ .
+ $$
+
+ \item
+ Directly observable in X-ray scattering experiments.
+
+ \item
+ Sharp peaks: order.
+
+ \item
+ Large deviation from $1$: uniformity.
+\end{itemize}
+\vfill
+\eject
+
+\title{Structure factor}
+$v(x)=8e^{-|x|}$, $\rho=10^{-5}$-$0.3$
+
+\hfil\includegraphics[height=5.5cm]{2pt_fourier_full.pdf}
+\vfill
+\eject
+
+\title{Structure factor}
+$v(x)=8e^{-|x|}$, $\rho=10^{-5}$-$0.3$
+
+\hfil\includegraphics[height=5.5cm]{2pt_fourier_peak.pdf}
+\vfill
+\eject
+
+\title{Structure factor}
+$v(x)=8e^{-|x|}$, maximal value as a function of $\rho$:
+
+\hfil\includegraphics[height=5.5cm]{2pt_fourier_max.pdf}
+\vfill
+\eject
+
+\title{Liquid behavior}
+\begin{itemize}
+ \item Sharpening of the peak: more order.
+ \item Not Bragg peaks: {\color{highlight}No} long range order.
+ \item Larger deviation from 1: more uniform (not even close to hyperuniform).
+ \item {\color{highlight}Short-range order}: {\color{highlight}Liquid}-like behavior.
+\end{itemize}
+\vfill
+\eject
+
+\title{Critical densities}
+\begin{itemize}
+ \item
+ We have found two critical densities: $\rho_*\approx 0.9\times10^{-3}$ and $\rho_{**}\approx0.2$.
+
+ \item The radial distribution function has a maximum only for $\rho>\rho_*$.
+
+ \item The structure factor has a maximum only for $\rho<\rho_{**}$.
+\end{itemize}
+\vfill
+\eject
+
+\title{Condensate fraction}
+\begin{itemize}
+ \item
+ Proportion of particles in the condensate state:
+ $$
+ \eta:=\frac1N\sum_i\left<\psi_0\right|P_i\left|\psi_0\right>
+ $$
+ where $P_i$ is the projector onto the constant state $V^{-\frac12}$.
+
+ \item
+ $\eta>0$ in thermodynamic limit: {\color{highlight}Bose-Einstein condensation} (still not proved to occur).
+\end{itemize}
+\vfill
+\eject
+
+\title{Condensate fraction}
+$v(x)=8e^{-|x|}$:
+
+\hfil\includegraphics[height=5.5cm]{condensate.pdf}
+\vfill
+\eject
+
+\title{Summary and outlook}
+\begin{itemize}
+ \item Using the {\color{highlight}Simplified approach}, we were able to probe the repulsive Bose gas {\color{highlight}beyond the dilute regime}.
+
+ \item Evidence for {\color{highlight}non-trivial behavior} at intermediate densities $\rho_*<\rho<\rho_{**}$: {\color{highlight}short-range order}.
+
+ \item Is there a phase transition?
+
+ \item The intermediate density regime has not been studied much, due to the lack of tools to do so.
+ As we have seen, there is non-trivial behavior there.
+ This warrants further investigation, both theoretical and experimental.
+\end{itemize}
+\vfill
+\eject
+
+\title{Open problems on the Simplified approach}
+\begin{itemize}
+ \item
+ Connect the Simplified approach to the many-Boson system: numerics suggests the prediction of the Simplified approach is an {\color{highlight}upper bound}, for all densities.
+
+ \item
+ Understand the factorization assumption.
+ It certainly does not hold exactly.
+ Does it hold approximately, in some sense?
+
+ \item
+ There are still many questions about the Bose gas with hard core interactions.
+ The Simplified approach is easily defined in the hard core case.
+ Can it shed some light?
+\end{itemize}
+
+\end{document}
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..94f61ff
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,47 @@
+PROJECTNAME=$(basename $(wildcard *.tex))
+LIBS=$(notdir $(wildcard libs/*))
+FIGS=$(notdir $(wildcard figs/*.fig))
+
+PDFS=$(addsuffix .pdf, $(PROJECTNAME))
+SYNCTEXS=$(addsuffix .synctex.gz, $(PROJECTNAME))
+
+all: $(PROJECTNAME)
+
+$(PROJECTNAME): $(LIBS) $(FIGS)
+ pdflatex -file-line-error $@.tex
+ pdflatex -synctex=1 $@.tex
+
+$(SYNCTEXS): $(LIBS) $(FIGS)
+ pdflatex -synctex=1 $(patsubst %.synctex.gz, %.tex, $@)
+
+$(LIBS):
+ ln -fs libs/$@ ./
+
+
+figs: $(FIGS)
+
+$(FIGS):
+ make -C figs/$@
+ for pdf in $$(find figs/$@/ -name '*.pdf'); do ln -fs "$$pdf" ./ ; done
+
+
+clean-aux: clean-figs-aux
+ rm -f $(addsuffix .aux, $(PROJECTNAME))
+ rm -f $(addsuffix .log, $(PROJECTNAME))
+ rm -f $(addsuffix .out, $(PROJECTNAME))
+
+clean-libs:
+ rm -f $(LIBS)
+
+clean-figs:
+ $(foreach fig,$(addprefix figs/, $(FIGS)), make -C $(fig) clean; )
+ rm -f $(notdir $(wildcard figs/*.fig/*.pdf))
+
+clean-figs-aux:
+ $(foreach fig,$(addprefix figs/, $(FIGS)), make -C $(fig) clean-aux; )
+
+
+clean-tex:
+ rm -f $(PDFS) $(SYNCTEXS)
+
+clean: clean-aux clean-tex clean-libs clean-figs
diff --git a/README b/README
new file mode 100644
index 0000000..874eea4
--- /dev/null
+++ b/README
@@ -0,0 +1,36 @@
+This directory contains the source files to typeset the presentation, and
+generate the figures. This can be accomplished by running
+ make
+
+The figures were obtained using simplesolv v0.4:
+ http://ian.jauslin.org/software/simplesolv
+
+This document uses a custom class file, located in the 'libs' directory, which
+defines a number of commands.
+
+
+* Dependencies:
+
+ pdflatex
+ TeXlive packages:
+ amsfonts
+ array
+ graphics
+ hyperref
+ latex
+ pgf
+ standalone
+ xcolor
+ GNU make
+
+* Files:
+
+ Jauslin_Rutgers_2023.tex:
+ main LaTeX file
+
+ libs:
+ custom LaTeX class file
+
+ figs:
+ source code for the figures
+
diff --git a/figs/2pt.fig/2020-08-27+correlation.dat b/figs/2pt.fig/2020-08-27+correlation.dat
new file mode 100644
index 0000000..c436b89
--- /dev/null
+++ b/figs/2pt.fig/2020-08-27+correlation.dat
@@ -0,0 +1,102 @@
+# Potential: 16 e^{-|x|}, rho=0.02
+# |x| 2-pt correlation
+ 0.04641589 0.00532330 0.00040199 0.00532330 0.00040199 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.13924767 0.00537264 0.00024875 0.00537264 0.00024875 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.23207944 0.00605816 0.00017567 0.00605816 0.00017567 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.32491122 0.00727112 0.00014500 0.00727112 0.00014500 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.41774300 0.00896049 0.00013083 0.00896049 0.00013083 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.51057477 0.01116990 0.00012069 0.01116990 0.00012069 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.60340655 0.01418247 0.00011223 0.01418247 0.00011223 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.69623833 0.01828721 0.00011014 0.01828721 0.00011014 0.00000000 0.00000000 0.00000000 0.00000000
+ 0.78907010 0.02370094 0.00011191 0.02370094 0.00011191 0.00000000 0.00000000 0.00000000 0.00000000
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diff --git a/figs/2pt.fig/2pt.dat b/figs/2pt.fig/2pt.dat
new file mode 100644
index 0000000..1993951
--- /dev/null
+++ b/figs/2pt.fig/2pt.dat
@@ -0,0 +1,100 @@
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diff --git a/figs/2pt.fig/2pt.gnuplot b/figs/2pt.fig/2pt.gnuplot
new file mode 100644
index 0000000..5334a6e
--- /dev/null
+++ b/figs/2pt.fig/2pt.gnuplot
@@ -0,0 +1,25 @@
+set ylabel "$G(r)$" norotate offset -1,0
+set xlabel "$r$"
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+unset key
+
+
+# set linestyle
+set style line 1 linetype rgbcolor "#4169E1" linewidth 2
+set style line 2 linetype rgbcolor "#DC143C" linewidth 1
+set style line 3 linetype rgbcolor "#32CD32" linewidth 2
+set style line 4 linetype rgbcolor "#4B0082" linewidth 2
+set style line 5 linetype rgbcolor "#DAA520" linewidth 2
+set style line 6 linetype rgbcolor "#555500" linewidth 2
+
+set pointsize 0.5
+
+rho=2e-2
+
+plot \
+ "2pt.dat" using 1:($2/rho**2) with lines ls 4,\
+ "2020-08-27+correlation.dat" using 1:2 ls 2
+
diff --git a/figs/2pt.fig/Makefile b/figs/2pt.fig/Makefile
new file mode 100644
index 0000000..abe0ad2
--- /dev/null
+++ b/figs/2pt.fig/Makefile
@@ -0,0 +1,35 @@
+PROJECT=$(basename $(wildcard *.gnuplot))
+
+SIMPLESOLV=simplesolv~/Work/Research/2018+bose_gas/cmp/simplesolv/source/src
+
+all: $(addsuffix .pdf, $(PROJECT))
+
+define gnuplot2pdf
+ gnuplot $(1).gnuplot > $(1).tikz.tex
+ pdflatex -jobname $(1) -file-line-error $(1).tikz.tex
+endef
+
+define bigeq_run
+ julia $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=12;P=8;J=10;maxiter=100;v_a=16;minlrho_init=-6;nlrho_init=100;rho=2e-2;xmax=10" -M anyeq 2pt > 2pt.dat
+endef
+
+2pt.dat:
+ $(call bigeq_run)
+
+DATS=2pt.dat
+
+2pt.pdf: 2pt.dat
+ $(call gnuplot2pdf,$(basename $@))
+
+
+clean-aux:
+ rm -f $(addsuffix .tikz.tex, $(PROJECT))
+ rm -f *.aux *.log
+
+clean-dat:
+ rm -f $(DATS)
+
+clean-pdf:
+ rm -f $(addsuffix .pdf, $(PROJECT))
+
+clean: clean-aux clean-pdf
diff --git a/figs/2pt_fourier.fig/2pt_fourier_0.3.dat b/figs/2pt_fourier.fig/2pt_fourier_0.3.dat
new file mode 100644
index 0000000..148b17f
--- /dev/null
+++ b/figs/2pt_fourier.fig/2pt_fourier_0.3.dat
@@ -0,0 +1,100 @@
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diff --git a/figs/2pt_fourier.fig/2pt_fourier_4.dat b/figs/2pt_fourier.fig/2pt_fourier_4.dat
new file mode 100644
index 0000000..714f67f
--- /dev/null
+++ b/figs/2pt_fourier.fig/2pt_fourier_4.dat
@@ -0,0 +1,100 @@
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diff --git a/figs/2pt_fourier.fig/2pt_fourier_5.dat b/figs/2pt_fourier.fig/2pt_fourier_5.dat
new file mode 100644
index 0000000..1f95da2
--- /dev/null
+++ b/figs/2pt_fourier.fig/2pt_fourier_5.dat
@@ -0,0 +1,100 @@
+ 8.000000000000000e-02 -1.657349932046348e-09
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diff --git a/figs/2pt_fourier.fig/2pt_fourier_full.gnuplot b/figs/2pt_fourier.fig/2pt_fourier_full.gnuplot
new file mode 100644
index 0000000..7dcb44a
--- /dev/null
+++ b/figs/2pt_fourier.fig/2pt_fourier_full.gnuplot
@@ -0,0 +1,45 @@
+set ylabel norotate "$\\mathcal S(\\kappa)$"
+set xlabel "$\\kappa$"
+
+#set xtics 1e-6, 1000, 1e6
+#set xtics add ("$10^{-6}$" 0.000001, "$10^{-3}$" 0.001, "$10^{0}$" 1, "$10^{3}$" 1000, "$10^6$" 1000000)
+#unset mxtics
+set xrange [:8]
+
+#set ytics 0, 1e-5, 2e-5
+#set ytics add ("$10^{-5}$" 1e-5)
+#set mytics
+#set yrange [0.99998:1.0001]
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+set key bottom right box linetype rgbcolor"#999999" width 2.5 height 0.3 spacing 1.3
+
+rgb(r,g,b) = 65536 * int(r) + 256 * int(g) + int(b)
+circle_2_rgb(x) = (x < 1./6 ? rgb(255,x*6*255,0) : \
+ (x < 2./6 ? rgb((2./6-x)*6*255,255,0) : \
+ (x < 3./6 ? rgb(0,255,(x-2./6)*6*255) : \
+ (x < 4./6 ? rgb(0,(4./6-x)*6*255,255) : \
+ (x < 5./6 ? rgb((x-4./6)*6*255,0,255) : \
+ rgb(255,0,(1-x)*6*255) \
+ )))))
+
+
+set style line 1 linetype rgbcolor circle_2_rgb(0.0) linewidth 2
+set style line 2 linetype rgbcolor circle_2_rgb(0.17) linewidth 2
+set style line 3 linetype rgbcolor circle_2_rgb(0.33) linewidth 2
+set style line 4 linetype rgbcolor circle_2_rgb(0.5) linewidth 2
+set style line 5 linetype rgbcolor circle_2_rgb(0.67) linewidth 2
+set style line 6 linetype rgbcolor circle_2_rgb(0.83) linewidth 2
+
+
+plot \
+ "2pt_fourier_5.dat" using 1:(1+$2/1e-5) with lines ls 1 title "$\\rho=10^{-5}$" ,\
+ "2pt_fourier_4.dat" using 1:(1+$2/1e-4) with lines ls 2 title "$\\rho=10^{-4}$" ,\
+ "2pt_fourier_3.dat" using 1:(1+$2/1e-3) with lines ls 3 title "$\\rho=10^{-3}$" ,\
+ "2pt_fourier_2.dat" using 1:(1+$2/1e-2) with lines ls 4 title "$\\rho=10^{-2}$" ,\
+ "2pt_fourier_1.dat" using 1:(1+$2/1e-1) with lines ls 5 title "$\\rho=10^{-1}$" ,\
+ "2pt_fourier_0.3.dat" using 1:(1+$2/0.3) with lines ls 6 title "$\\rho=0.3$"
+
+
diff --git a/figs/2pt_fourier.fig/2pt_fourier_peak.gnuplot b/figs/2pt_fourier.fig/2pt_fourier_peak.gnuplot
new file mode 100644
index 0000000..1382c9c
--- /dev/null
+++ b/figs/2pt_fourier.fig/2pt_fourier_peak.gnuplot
@@ -0,0 +1,45 @@
+set ylabel norotate "$\\mathcal S(\\kappa)$"
+set xlabel "$\\kappa$"
+
+#set xtics 1e-6, 1000, 1e6
+#set xtics add ("$10^{-6}$" 0.000001, "$10^{-3}$" 0.001, "$10^{0}$" 1, "$10^{3}$" 1000, "$10^6$" 1000000)
+#unset mxtics
+set xrange [:8]
+
+#set ytics 0, 1e-5, 2e-5
+#set ytics add ("$10^{-5}$" 1e-5)
+#set mytics
+set yrange [0.99998:1.0001]
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+set key top right box linetype rgbcolor"#999999" width 2.5 height 0.3 spacing 1.3
+
+rgb(r,g,b) = 65536 * int(r) + 256 * int(g) + int(b)
+circle_2_rgb(x) = (x < 1./6 ? rgb(255,x*6*255,0) : \
+ (x < 2./6 ? rgb((2./6-x)*6*255,255,0) : \
+ (x < 3./6 ? rgb(0,255,(x-2./6)*6*255) : \
+ (x < 4./6 ? rgb(0,(4./6-x)*6*255,255) : \
+ (x < 5./6 ? rgb((x-4./6)*6*255,0,255) : \
+ rgb(255,0,(1-x)*6*255) \
+ )))))
+
+
+set style line 1 linetype rgbcolor circle_2_rgb(0.0) linewidth 2
+set style line 2 linetype rgbcolor circle_2_rgb(0.17) linewidth 2
+set style line 3 linetype rgbcolor circle_2_rgb(0.33) linewidth 2
+set style line 4 linetype rgbcolor circle_2_rgb(0.5) linewidth 2
+set style line 5 linetype rgbcolor circle_2_rgb(0.67) linewidth 2
+set style line 6 linetype rgbcolor circle_2_rgb(0.83) linewidth 2
+
+
+plot \
+ "2pt_fourier_5.dat" using 1:(1+$2/1e-5) with lines ls 1 title "$\\rho=10^{-5}$" ,\
+ "2pt_fourier_4.dat" using 1:(1+$2/1e-4) with lines ls 2 title "$\\rho=10^{-4}$" ,\
+ "2pt_fourier_3.dat" using 1:(1+$2/1e-3) with lines ls 3 title "$\\rho=10^{-3}$" ,\
+ "2pt_fourier_2.dat" using 1:(1+$2/1e-2) with lines ls 4 title "$\\rho=10^{-2}$" ,\
+ "2pt_fourier_1.dat" using 1:(1+$2/1e-1) with lines ls 5 title "$\\rho=10^{-1}$" ,\
+ "2pt_fourier_0.3.dat" using 1:(1+$2/0.3) with lines ls 6 title "$\\rho=0.3$"
+
+
diff --git a/figs/2pt_fourier.fig/Makefile b/figs/2pt_fourier.fig/Makefile
new file mode 100644
index 0000000..e5ca83d
--- /dev/null
+++ b/figs/2pt_fourier.fig/Makefile
@@ -0,0 +1,53 @@
+PROJECT=$(basename $(wildcard *.gnuplot))
+
+SIMPLESOLV=simplesolv~/Work/Research/2018+bose_gas/cmp/simplesolv/source/src
+
+all: $(addsuffix .pdf, $(PROJECT))
+
+define gnuplot2pdf
+ gnuplot $(1).gnuplot > $(1).tikz.tex
+ pdflatex -jobname $(1) -file-line-error $(1).tikz.tex
+endef
+
+define bigeq_run
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=12;P=8;J=10;maxiter=100;v_a=8;rho=1e-$(1);minlrho_init=-6;nlrho_init=100;window_L=100;kmin=0;kmax=8;nk=100" -M anyeq 2pt_fourier > 2pt_fourier_$(1).dat
+endef
+define bigeq_run_fine
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=12;P=8;J=10;maxiter=100;v_a=8;rho=1e-$(1);minlrho_init=-6;nlrho_init=100;window_L=100;kmin=0;kmax=8;nk=150" -M anyeq 2pt_fourier > 2pt_fourier_$(1).dat
+endef
+define bigeq_run_plus
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=18;P=12;J=15;maxiter=100;v_a=8;rho=1e-$(1);minlrho_init=-6;nlrho_init=100;window_L=50;kmin=0;kmax=8;nk=100" -M anyeq 2pt_fourier > 2pt_fourier_$(1).dat
+endef
+
+2pt_fourier_5.dat:
+ $(call bigeq_run,5)
+2pt_fourier_4.dat:
+ $(call bigeq_run,4)
+2pt_fourier_3.dat:
+ $(call bigeq_run,3)
+2pt_fourier_2.dat:
+ $(call bigeq_run_fine,2)
+2pt_fourier_1.dat:
+ $(call bigeq_run_plus,1)
+2pt_fourier_0.3.dat:
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=18;P=12;J=15;maxiter=100;v_a=8;rho=0.3;minlrho_init=-6;nlrho_init=100;window_L=25;kmin=0;kmax=8;nk=100" -M anyeq 2pt_fourier > 2pt_fourier_0.3.dat
+
+DATS=2pt_fourier_5.dat 2pt_fourier_4.dat 2pt_fourier_3.dat 2pt_fourier_2.dat 2pt_fourier_1.dat 2pt_fourier_0.3.dat
+
+2pt_fourier_peak.pdf: $(DATS)
+ $(call gnuplot2pdf,$(basename $@))
+2pt_fourier_full.pdf: $(DATS)
+ $(call gnuplot2pdf,$(basename $@))
+
+
+clean-aux:
+ rm -f $(addsuffix .tikz.tex, $(PROJECT))
+ rm -f *.aux *.log
+
+clean-dat:
+ rm -f $(DATS)
+
+clean-pdf:
+ rm -f $(addsuffix .pdf, $(PROJECT))
+
+clean: clean-aux clean-pdf
diff --git a/figs/2pt_fourier_max.fig/2pt_fourier_max.dat b/figs/2pt_fourier_max.fig/2pt_fourier_max.dat
new file mode 100644
index 0000000..1f635ce
--- /dev/null
+++ b/figs/2pt_fourier_max.fig/2pt_fourier_max.dat
@@ -0,0 +1,64 @@
+ 1.000000000000000e-05 9.345814412397834e-01 8.552150897032670e-13
+ 1.177476859744159e-05 9.346664121067549e-01 1.202135749463409e-12
+ 1.386451755232967e-05 9.347707343163895e-01 1.691440674471414e-12
+ 1.632514858938491e-05 9.348990198469196e-01 2.382386207082547e-12
+ 1.922248469588574e-05 9.350570204371854e-01 3.359292303397934e-12
+ 2.263403091619170e-05 9.352519151585713e-01 4.742339255615403e-12
+ 2.665104764654962e-05 9.354926698796786e-01 6.703107484819423e-12
+ 3.138099189175128e-05 9.357904855291631e-01 9.486984590044240e-12
+ 3.695039178835623e-05 9.361593545288540e-01 1.344553010199956e-11
+ 4.350823128927006e-05 9.366167475170035e-01 1.908329671284983e-11
+ 5.122993555151229e-05 9.371844539822675e-01 2.712565615880497e-11
+ 6.032206363809036e-05 9.378895996626473e-01 3.861715148932982e-11
+ 7.102783406586597e-05 9.387658591053332e-01 5.506419158683554e-11
+ 8.363363101030509e-05 9.398548706385174e-01 7.864206171680841e-11
+ 9.847666521101578e-05 9.412078402022969e-01 1.124949675067762e-10
+ 1.159539945107438e-04 9.428872868003285e-01 1.611700774661894e-10
+ 1.365331453313020e-04 9.449688332938058e-01 2.312433761632351e-10
+ 1.607646192156945e-04 9.475428839956032e-01 3.322177644407015e-10
+ 1.892966189920617e-04 9.507159629563738e-01 4.778032877984084e-10
+ 2.228923884909594e-04 9.546114332252015e-01 6.877261557190169e-10
+ 2.624506296612100e-04 9.593693055081258e-01 9.902567270374855e-10
+ 3.090295432513592e-04 9.651449063175064e-01 1.425694374417351e-09
+ 3.638751361557823e-04 9.721063279266348e-01 2.051093841395011e-09
+ 4.284545526596889e-04 9.804308118714142e-01 2.946554554451515e-09
+ 5.044953212088191e-04 9.903004673782504e-01 4.223408397651924e-09
+ 5.940315665725812e-04 1.001897911604214e+00 6.034615287011951e-09
+ 6.994584235967866e-04 1.015402464935713e+00 8.587587607130816e-09
+ 8.235961081383442e-04 1.030987417813764e+00 1.215948830640918e-08
+ 9.697653591082486e-04 1.048818648812522e+00 1.711475484821645e-08
+ 1.141876269731449e-03 1.069054603188533e+00 2.392416506589299e-08
+ 1.344532884299761e-03 1.091847421943818e+00 3.318416187524993e-08
+ 1.583156358428039e-03 1.117344890815988e+00 4.563439072334752e-08
+ 1.864129977405847e-03 1.145692855860799e+00 6.217050807946128e-08
+ 2.194969911950787e-03 1.177037801671126e+00 8.384837125104746e-08
+ 2.584526279156727e-03 1.211529381168928e+00 1.118748629464322e-07
+ 3.043219887107719e-03 1.249322789409432e+00 1.475800562872608e-07
+ 3.583320996182576e-03 1.290580888657717e+00 1.923654728380341e-07
+ 4.219277554040372e-03 1.335475882250091e+00 2.476241099209779e-07
+ 4.968101684720475e-03 1.384190602239726e+00 3.146299028920229e-07
+ 5.849824770614332e-03 1.436920277779574e+00 3.943976640740961e-07
+ 6.888033300956561e-03 1.493874516611379e+00 4.875196670765305e-07
+ 8.110499821023527e-03 1.555276513243977e+00 5.939900926164071e-07
+ 9.549925860214359e-03 1.621361584913291e+00 7.130306870751327e-07
+ 1.124481671267474e-02 1.692388171755712e+00 8.429399726165237e-07
+ 1.324051147123890e-02 1.768632854261179e+00 9.810002396404356e-07
+ 1.559039586856090e-02 1.850367899140888e+00 1.123421023005990e-06
+ 1.835733036948140e-02 1.937928997570602e+00 1.265373028294286e-06
+ 2.161533171674304e-02 2.031651119110462e+00 1.401147518050647e-06
+ 2.545155291215895e-02 2.131939113048738e+00 1.524341932452881e-06
+ 2.996861459862124e-02 2.239068052585921e+00 1.628031290653131e-06
+ 3.528735020846751e-02 2.353931883140321e+00 1.705267895310798e-06
+ 4.155003831215873e-02 2.476473586798379e+00 1.749433558398301e-06
+ 4.892420863405017e-02 2.608108911035392e+00 1.753923871494640e-06
+ 5.760712354788948e-02 2.749217073584620e+00 1.713932075467129e-06
+ 6.783105493406272e-02 2.901057281252259e+00 1.624920203679081e-06
+ 7.986949755689382e-02 3.068959046043353e+00 1.486982339138430e-06
+ 9.404448517263514e-02 3.260310183958069e+00 1.295796996233772e-06
+ 1.107352050773305e-01 3.458519146546352e+00 1.059995284580743e-06
+ 1.303881415375808e-01 3.664453732410328e+00 7.719169503830476e-07
+ 1.535290194455476e-01 3.909581268324730e+00 4.464140314802704e-07
+ 1.807768676963434e-01 4.203498863449478e+00 1.232187307927003e-07
+ 2.128605784894758e-01 4.258761292369216e+00 -3.918953798048501e-07
+ 2.506384055231131e-01 4.447638616870782e+00 -6.847213979772985e-07
+ 2.951209226666384e-01 4.454425085066641e+00 -1.846897477962818e-06
diff --git a/figs/2pt_fourier_max.fig/2pt_fourier_max.gnuplot b/figs/2pt_fourier_max.fig/2pt_fourier_max.gnuplot
new file mode 100644
index 0000000..1d6efdb
--- /dev/null
+++ b/figs/2pt_fourier_max.fig/2pt_fourier_max.gnuplot
@@ -0,0 +1,38 @@
+set ylabel norotate "$\\mathcal S(\\kappa_*)$"
+set xlabel "$\\rho$"
+
+set xtics 1e-5, 1, 10
+set xtics add ("$10^{-5}$" 0.00001, "$10^{-4}$" 0.0001, "$10^{-3}$" 0.001, "$10^{-2}$" 0.01, "$10^{-1}$" 0.1, "$1$" 1)
+unset mxtics
+set xrange [0.00001:1]
+
+#set ytics 0, 1e-5, 2e-5
+#set ytics add ("$10^{-5}$" 1e-5)
+#set mytics
+#set yrange [0.999:]
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+set key off
+
+set style line 1 linetype rgbcolor "#4169E1" linewidth 2 dashtype "."
+set style line 2 linetype rgbcolor "#DC143C" linewidth 2
+set style line 3 linetype rgbcolor "#32CD32" linewidth 2
+set style line 4 linetype rgbcolor "#4B0082" linewidth 2
+set style line 5 linetype rgbcolor "#DAA520" linewidth 2
+set style line 6 linetype rgbcolor "#999999" linewidth 2 dashtype (2,2)
+set style line 11 linetype rgbcolor "#4169E1" linewidth 1 dashtype (1,2)
+set style line 12 linetype rgbcolor "#DC143C" linewidth 1 dashtype (1,2)
+
+set logscale x
+
+#set arrow from 1.9e-3,1.00008 to 1.9e-3,0.99999 nohead ls 11
+#set arrow from 0.9e-3,1.00008 to 0.9e-3,0.99999 nohead ls 12
+
+plot \
+ 1 ls 6 notitle,\
+ (x>=0.19 ? 1 : sqrt(-1)) with lines ls 4 notitle,\
+ "2pt_fourier_max.dat" using 1:($3>0 ? 1+$3/$1 : 1) with lines ls 4
+
+
diff --git a/figs/2pt_fourier_max.fig/Makefile b/figs/2pt_fourier_max.fig/Makefile
new file mode 100644
index 0000000..305450f
--- /dev/null
+++ b/figs/2pt_fourier_max.fig/Makefile
@@ -0,0 +1,35 @@
+PROJECT=$(basename $(wildcard *.gnuplot))
+
+SIMPLESOLV=simplesolv~/Work/Research/2018+bose_gas/cmp/simplesolv/source/src
+
+all: $(addsuffix .pdf, $(PROJECT))
+
+define gnuplot2pdf
+ gnuplot $(1).gnuplot > $(1).tikz.tex
+ pdflatex -jobname $(1) -file-line-error $(1).tikz.tex
+endef
+
+define bigeq_run
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=18;P=12;J=15;maxiter=100;v_a=8;minlrho=-5;maxlrho=-0.53;nlrho=64;window_L=100;dk=1e-4;maxstep=0.1" -M anyeq 2pt_fourier_max_rho > 2pt_fourier_max.dat
+endef
+
+2pt_fourier_max.dat:
+ $(call bigeq_run)
+
+DATS=2pt_fourier_max.dat
+
+2pt_fourier_max.pdf: 2pt_fourier_max.dat
+ $(call gnuplot2pdf,$(basename $@))
+
+
+clean-aux:
+ rm -f $(addsuffix .tikz.tex, $(PROJECT))
+ rm -f *.aux *.log
+
+clean-dat:
+ rm -f $(DATS)
+
+clean-pdf:
+ rm -f $(addsuffix .pdf, $(PROJECT))
+
+clean: clean-aux clean-pdf
diff --git a/figs/2pt_max.fig/2pt_max.dat b/figs/2pt_max.fig/2pt_max.dat
new file mode 100644
index 0000000..f83c547
--- /dev/null
+++ b/figs/2pt_max.fig/2pt_max.dat
@@ -0,0 +1,59 @@
+ 7.220809018385464e-04 2.018973565973845e+01 5.211229116520497e-07
+ 8.111308307896872e-04 1.739509445768228e+01 6.576636156499842e-07
+ 9.111627561154887e-04 1.523059825227606e+01 8.302333247422031e-07
+ 1.023531021899027e-03 1.387331723806022e+01 1.048415025334355e-06
+ 1.149756995397736e-03 1.285566507206079e+01 1.324303448465614e-06
+ 1.291549665014884e-03 1.194801886571412e+01 1.673210489577455e-06
+ 1.450828778495940e-03 1.126962289641431e+01 2.114491962368022e-06
+ 1.629750834620644e-03 1.063415003004839e+01 2.672749854539034e-06
+ 1.830738280295368e-03 1.011689961825143e+01 3.378959975269341e-06
+ 2.056512308348652e-03 9.614622003268412e+00 4.272305392686213e-06
+ 2.310129700083158e-03 9.178257425458384e+00 5.402697266619999e-06
+ 2.595024211399737e-03 8.783487899154855e+00 6.832287818065473e-06
+ 2.915053062825176e-03 8.400087365492075e+00 8.640690704253858e-06
+ 3.678379771828634e-03 7.745111761585086e+00 1.382076631238977e-05
+ 4.641588833612782e-03 7.144706722479198e+00 2.210027389724007e-05
+ 6.579332246575682e-03 6.393774597139051e+00 4.465012231410845e-05
+ 8.302175681319744e-03 5.944916899632466e+00 7.130485532670318e-05
+ 9.326033468832200e-03 5.744396472510482e+00 9.007848588332599e-05
+ 1.047615752789665e-02 5.547651829606133e+00 1.137675501456023e-04
+ 1.176811952434998e-02 5.357427743741679e+00 1.436572369795343e-04
+ 1.321941148466029e-02 5.175142321646281e+00 1.813691885996321e-04
+ 1.484968262254465e-02 5.006476097704476e+00 2.289320042467527e-04
+ 1.668100537200059e-02 4.843500230606333e+00 2.889035712280707e-04
+ 1.873817422860383e-02 4.689243621580819e+00 3.645130850275416e-04
+ 2.104904144512020e-02 4.542147958998562e+00 4.598076132141278e-04
+ 2.364489412645407e-02 4.396049752656342e+00 5.799249403751192e-04
+ 3.764935806792467e-02 3.890625424864157e+00 1.465464005334726e-03
+ 4.750810162102798e-02 3.663479217958253e+00 2.328143035109476e-03
+ 5.336699231206307e-02 3.563304920231506e+00 2.934278174022928e-03
+ 5.994842503189409e-02 3.468775419753054e+00 3.697933125644822e-03
+ 6.734150657750822e-02 3.376199168574197e+00 4.660073971471896e-03
+ 1.072267222010323e-01 3.035126008562789e+00 1.175532933763886e-02
+ 1.204503540258782e-01 2.963209828607758e+00 1.481497246608100e-02
+ 1.353047774579806e-01 2.889870627807464e+00 1.867153234794507e-02
+ 1.519911082952933e-01 2.819431535034761e+00 2.353311763560754e-02
+ 1.707352647470690e-01 2.750361767006201e+00 2.966222975889765e-02
+ 1.917910261672489e-01 2.683581390366167e+00 3.738998865289806e-02
+ 2.154434690031884e-01 2.620113300842895e+00 4.713412029366486e-02
+ 2.718588242732940e-01 2.506680445892512e+00 7.491234297411424e-02
+ 3.430469286314919e-01 2.397861132187415e+00 1.190842774019350e-01
+ 3.853528593710527e-01 2.348709126442317e+00 1.501531313324748e-01
+ 5.462277217684343e-01 2.213998487416692e+00 3.010537094548759e-01
+ 6.135907273413169e-01 2.159190780322460e+00 3.796531910629315e-01
+ 6.892612104349695e-01 2.104318598346585e+00 4.788093262468083e-01
+ 7.742636826811270e-01 2.054957669792689e+00 6.039029328900501e-01
+ 8.697490026177834e-01 2.014717733267600e+00 7.617095007448773e-01
+ 1.097498765493057e+00 1.944232229835132e+00 1.211873664289093e+00
+ 1.555676143930472e+00 1.849679137183402e+00 2.432230525785016e+00
+ 2.205130739903046e+00 1.755851623363939e+00 4.881957590314813e+00
+ 2.477076355991709e+00 1.715067006985843e+00 6.158508335889029e+00
+ 2.782559402207126e+00 1.654928891762455e+00 7.769211167278110e+00
+ 3.511191734215128e+00 1.567813951102577e+00 1.236681523118124e+01
+ 3.944206059437656e+00 1.542436734218897e+00 1.560301160065102e+01
+ 4.430621457583878e+00 1.520671270243120e+00 1.968602995118866e+01
+ 4.977023564332113e+00 1.500406364404500e+00 2.483738995641643e+01
+ 5.590810182512223e+00 1.481300360506878e+00 3.133660892477183e+01
+ 6.280291441834247e+00 1.463684701974351e+00 3.953632925420883e+01
+ 8.902150854450392e+00 1.412546112155323e+00 7.940057353781076e+01
+ 1.000000000000000e+01 1.392593488777013e+00 1.001767762256856e+02
diff --git a/figs/2pt_max.fig/2pt_max.gnuplot b/figs/2pt_max.fig/2pt_max.gnuplot
new file mode 100644
index 0000000..b37c8a1
--- /dev/null
+++ b/figs/2pt_max.fig/2pt_max.gnuplot
@@ -0,0 +1,34 @@
+set ylabel norotate "$G(r_*)$"
+set xlabel "$\\rho$"
+
+set xtics 1e-4, 100, 10
+set xtics add ("$10^{-4}$" 0.0001, "$10^{-3}$" 0.001, "$10^{-2}$" 0.01, "$10^{-1}$" 0.1, "$1$" 1, "$10$" 10)
+unset mxtics
+set xrange [0.0001:10]
+
+#set ytics 0, 1e-5, 2e-5
+#set ytics add ("$10^{-5}$" 1e-5)
+#set mytics
+set yrange [0.999:]
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+set key off
+
+set style line 1 linetype rgbcolor "#4169E1" linewidth 2
+set style line 2 linetype rgbcolor "#DC143C" linewidth 2
+set style line 3 linetype rgbcolor "#32CD32" linewidth 2
+set style line 4 linetype rgbcolor "#4B0082" linewidth 2
+set style line 5 linetype rgbcolor "#DAA520" linewidth 2
+set style line 6 linetype rgbcolor "#000000" linewidth 1
+
+se logscale x
+
+
+plot \
+ 1 ls 6 notitle,\
+ (x<=7.23e-4 ? 1 : sqrt(-1)) with lines ls 4 notitle,\
+ "2pt_max.dat" using 1:($3/$1**2>=1 ? $3/$1**2 : 1) with lines ls 4
+
+
diff --git a/figs/2pt_max.fig/Makefile b/figs/2pt_max.fig/Makefile
new file mode 100644
index 0000000..b419fee
--- /dev/null
+++ b/figs/2pt_max.fig/Makefile
@@ -0,0 +1,35 @@
+PROJECT=$(basename $(wildcard *.gnuplot))
+
+SIMPLESOLV=simplesolv~/Work/Research/2018+bose_gas/cmp/simplesolv/source/src
+
+all: $(addsuffix .pdf, $(PROJECT))
+
+define gnuplot2pdf
+ gnuplot $(1).gnuplot > $(1).tikz.tex
+ pdflatex -jobname $(1) -file-line-error $(1).tikz.tex
+endef
+
+define bigeq_run
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=12;P=8;J=10;maxiter=100;v_a=8;minlrho=-4;maxlrho=1;nlrho=100;window_L=1000;dx=1e-4;maxstep=0.1" -M anyeq 2pt_max_rho > 2pt_max.dat
+endef
+
+2pt_max.dat:
+ $(call bigeq_run)
+
+DATS=2pt_max.dat
+
+2pt_max.pdf: 2pt_max.dat
+ $(call gnuplot2pdf,$(basename $@))
+
+
+clean-aux:
+ rm -f $(addsuffix .tikz.tex, $(PROJECT))
+ rm -f *.aux *.log
+
+clean-dat:
+ rm -f $(DATS)
+
+clean-pdf:
+ rm -f $(addsuffix .pdf, $(PROJECT))
+
+clean: clean-aux clean-pdf
diff --git a/figs/2pt_rho.fig/2pt_1.dat b/figs/2pt_rho.fig/2pt_1.dat
new file mode 100644
index 0000000..5a7050e
--- /dev/null
+++ b/figs/2pt_rho.fig/2pt_1.dat
@@ -0,0 +1,100 @@
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diff --git a/figs/2pt_rho.fig/2pt_2.dat b/figs/2pt_rho.fig/2pt_2.dat
new file mode 100644
index 0000000..1edf2f7
--- /dev/null
+++ b/figs/2pt_rho.fig/2pt_2.dat
@@ -0,0 +1,100 @@
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diff --git a/figs/2pt_rho.fig/2pt_3.dat b/figs/2pt_rho.fig/2pt_3.dat
new file mode 100644
index 0000000..af3b99f
--- /dev/null
+++ b/figs/2pt_rho.fig/2pt_3.dat
@@ -0,0 +1,100 @@
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diff --git a/figs/2pt_rho.fig/2pt_4.dat b/figs/2pt_rho.fig/2pt_4.dat
new file mode 100644
index 0000000..f26457a
--- /dev/null
+++ b/figs/2pt_rho.fig/2pt_4.dat
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diff --git a/figs/2pt_rho.fig/2pt_5.dat b/figs/2pt_rho.fig/2pt_5.dat
new file mode 100644
index 0000000..4c3597a
--- /dev/null
+++ b/figs/2pt_rho.fig/2pt_5.dat
@@ -0,0 +1,100 @@
+ 1.395000000000000e+00 4.541710910501922e-13
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diff --git a/figs/2pt_rho.fig/2pt_rho.gnuplot b/figs/2pt_rho.fig/2pt_rho.gnuplot
new file mode 100644
index 0000000..08b35f1
--- /dev/null
+++ b/figs/2pt_rho.fig/2pt_rho.gnuplot
@@ -0,0 +1,48 @@
+set ylabel norotate "$G(r)$"
+set xlabel "$r\\rho^{1/3}$"
+
+#set xtics 1e-6, 1000, 1e6
+#set xtics add ("$10^{-6}$" 0.000001, "$10^{-3}$" 0.001, "$10^{0}$" 1, "$10^{3}$" 1000, "$10^6$" 1000000)
+#unset mxtics
+set xrange [:3]
+
+#set ytics 0, 1e-5, 2e-5
+#set ytics add ("$10^{-5}$" 1e-5)
+#set mytics
+set yrange [0.8:]
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+set key bottom right box linetype rgbcolor"#999999" width 3 height 0.3 spacing 1.3
+
+
+rgb(r,g,b) = 65536 * int(r) + 256 * int(g) + int(b)
+circle_2_rgb(x) = (x < 1./6 ? rgb(255,x*6*255,0) : \
+ (x < 2./6 ? rgb((2./6-x)*6*255,255,0) : \
+ (x < 3./6 ? rgb(0,255,(x-2./6)*6*255) : \
+ (x < 4./6 ? rgb(0,(4./6-x)*6*255,255) : \
+ (x < 5./6 ? rgb((x-4./6)*6*255,0,255) : \
+ rgb(255,0,(1-x)*6*255) \
+ )))))
+
+
+set style line 1 linetype rgbcolor circle_2_rgb(0.0) linewidth 2
+set style line 2 linetype rgbcolor circle_2_rgb(0.2) linewidth 2
+set style line 3 linetype rgbcolor circle_2_rgb(0.4) linewidth 2
+set style line 4 linetype rgbcolor circle_2_rgb(0.6) linewidth 2
+set style line 5 linetype rgbcolor circle_2_rgb(0.8) linewidth 2
+set style line 6 linetype rgbcolor (0,0,0) linewidth 1
+
+set pointsize 1
+
+
+plot \
+ 1 ls 6 notitle,\
+ "2pt_5.dat" using ($1*1e-5**(1./3)):($2/1e-5**2) with lines ls 1 title "$\\rho=10^{-5}$" ,\
+ "2pt_4.dat" using ($1*1e-4**(1./3)):($2/1e-4**2) with lines ls 2 title "$\\rho=10^{-4}$" ,\
+ "2pt_3.dat" using ($1*1e-3**(1./3)):($2/1e-3**2) with lines ls 3 title "$\\rho=10^{-3}$" ,\
+ "2pt_2.dat" using ($1*1e-2**(1./3)):($2/1e-2**2) with lines ls 4 title "$\\rho=10^{-2}$" ,\
+ "2pt_1.dat" using ($1*1e-1**(1./3)):($2/1e-1**2) with lines ls 5 title "$\\rho=10^{-1}$"
+
+
diff --git a/figs/2pt_rho.fig/Makefile b/figs/2pt_rho.fig/Makefile
new file mode 100644
index 0000000..bdd3eca
--- /dev/null
+++ b/figs/2pt_rho.fig/Makefile
@@ -0,0 +1,46 @@
+PROJECT=$(basename $(wildcard *.gnuplot))
+
+SIMPLESOLV=simplesolv~/Work/Research/2018+bose_gas/cmp/simplesolv/source/src
+
+all: $(addsuffix .pdf, $(PROJECT))
+
+define gnuplot2pdf
+ gnuplot $(1).gnuplot > $(1).tikz.tex
+ pdflatex -jobname $(1) -file-line-error $(1).tikz.tex
+endef
+
+define bigeq_run
+ julia $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=12;P=8;J=10;maxiter=100;v_a=8;rho=1e-$(1);minlrho_init=-6;nlrho_init=100;window_L=100;xmin=0;xmax=$(2);nx=100" -M anyeq 2pt > 2pt_$(1).dat
+endef
+define bigeq_run_plus
+ julia $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=18;P=12;J=15;maxiter=100;v_a=8;rho=1e-$(1);minlrho_init=-6;nlrho_init=100;window_L=100;xmin=0;xmax=$(2);nx=100" -M anyeq 2pt > 2pt_$(1).dat
+endef
+
+2pt_5.dat:
+ $(call bigeq_run_plus,5,139.5)
+2pt_4.dat:
+ $(call bigeq_run,4,64.5)
+2pt_3.dat:
+ $(call bigeq_run,3,30)
+2pt_2.dat:
+ $(call bigeq_run,2,14)
+2pt_1.dat:
+ $(call bigeq_run,1,6.5)
+
+DATS=2pt_5.dat 2pt_4.dat 2pt_3.dat 2pt_2.dat 2pt_1.dat
+
+2pt_rho.pdf: $(DATS)
+ $(call gnuplot2pdf,$(basename $@))
+
+
+clean-aux:
+ rm -f $(addsuffix .tikz.tex, $(PROJECT))
+ rm -f *.aux *.log
+
+clean-dat:
+ rm -f $(DATS)
+
+clean-pdf:
+ rm -f $(addsuffix .pdf, $(PROJECT))
+
+clean: clean-aux clean-pdf
diff --git a/figs/condensate.fig/Makefile b/figs/condensate.fig/Makefile
new file mode 100644
index 0000000..9983ef7
--- /dev/null
+++ b/figs/condensate.fig/Makefile
@@ -0,0 +1,35 @@
+PROJECT=$(basename $(wildcard *.gnuplot))
+
+SIMPLESOLV=simplesolv~/Work/Research/2018+bose_gas/cmp/simplesolv/source/src
+
+all: $(addsuffix .pdf, $(PROJECT))
+
+define gnuplot2pdf
+ gnuplot $(1).gnuplot > $(1).tikz.tex
+ pdflatex -jobname $(1) -file-line-error $(1).tikz.tex
+endef
+
+define bigeq_run
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=12;P=8;J=10;maxiter=100;v_a=8;minlrho=-6;nlrho=100;maxlrho=2" -M anyeq condensate_fraction_rho > condensate.dat
+endef
+
+condensate.dat:
+ $(call bigeq_run)
+
+DATS=condensate.dat
+
+condensate.pdf: $(DATS)
+ $(call gnuplot2pdf,$(basename $@))
+
+
+clean-aux:
+ rm -f $(addsuffix .tikz.tex, $(PROJECT))
+ rm -f *.aux *.log
+
+clean-dat:
+ rm -f $(DATS)
+
+clean-pdf:
+ rm -f $(addsuffix .pdf, $(PROJECT))
+
+clean: clean-aux clean-pdf
diff --git a/figs/condensate.fig/condensate.dat b/figs/condensate.fig/condensate.dat
new file mode 100644
index 0000000..7beede0
--- /dev/null
+++ b/figs/condensate.fig/condensate.dat
@@ -0,0 +1,100 @@
+ 1.000000000000000e-06 8.524653565633833e-03 7.195282669866215e-15
+ 1.204503540258781e-06 9.482931278294420e-03 1.219933599614962e-14
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+ 1.747528400007683e-06 1.164867071649953e-02 2.986683032499419e-15
+ 2.104904144512022e-06 1.288059904788134e-02 1.880210643928359e-14
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+ 1.000000000000000e+02 3.170507358779736e-02 6.838220457800429e-12
diff --git a/figs/condensate.fig/condensate.gnuplot b/figs/condensate.fig/condensate.gnuplot
new file mode 100644
index 0000000..c2fbcc9
--- /dev/null
+++ b/figs/condensate.fig/condensate.gnuplot
@@ -0,0 +1,38 @@
+set ylabel norotate "$\\eta$"
+set xlabel "$\\rho$"
+
+set xtics 1e-6, 100, 100
+set xtics add ("$10^{-6}$" 0.000001, "$10^{-4}$" 0.0001, "$10^{-2}$" 0.01, "$1$" 1.0, "$10^2$" 100)
+unset mxtics
+
+#set ytics 0, 1e-5, 2e-5
+#set ytics add ("$10^{-5}$" 1e-5)
+#set mytics
+set yrange [0:1]
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+set key off
+
+
+set style line 1 linetype rgbcolor "#4169E1" linewidth 2 dashtype "."
+set style line 2 linetype rgbcolor "#DC143C" linewidth 2
+set style line 3 linetype rgbcolor "#32CD32" linewidth 2
+set style line 4 linetype rgbcolor "#4B0082" linewidth 2
+set style line 5 linetype rgbcolor "#DAA520" linewidth 2
+set style line 6 linetype rgbcolor "#999999" linewidth 2 dashtype (2,2)
+set style line 11 linetype rgbcolor "#4169E1" linewidth 1 dashtype (1,2)
+set style line 12 linetype rgbcolor "#DC143C" linewidth 1 dashtype (1,2)
+
+set logscale x
+
+set arrow from 0.9e-3,1 to 0.9e-3,0 nohead ls 12
+set arrow from 0.2,1 to 0.2,0 nohead ls 12
+
+set label "$\\rho_*$" at 0.9e-3,-0.05 center textcolor rgbcolor "#DC143C"
+set label "$\\rho_{**}$" at 0.2,-0.05 center textcolor rgbcolor "#DC143C"
+
+plot \
+ "condensate.dat" using 1:(1-$2) with lines ls 4
+
diff --git a/figs/energy.fig/Makefile b/figs/energy.fig/Makefile
new file mode 100644
index 0000000..6278330
--- /dev/null
+++ b/figs/energy.fig/Makefile
@@ -0,0 +1,35 @@
+PROJECT=$(basename $(wildcard *.gnuplot))
+
+SIMPLESOLV=simplesolv~/Work/Research/2018+bose_gas/cmp/simplesolv/source/src
+
+all: $(addsuffix .pdf, $(PROJECT))
+
+define gnuplot2pdf
+ gnuplot $(1).gnuplot > $(1).tikz.tex
+ pdflatex -jobname $(1) -file-line-error $(1).tikz.tex
+endef
+
+define bigeq_run
+ julia -p 16 $(SIMPLESOLV)/main.jl -p "eq=bigeq;N=12;P=8;J=10;maxiter=100;v_a=1;minlrho=-6;maxlrho=2;nlrho=100" -M anyeq energy_rho > energy.dat
+endef
+
+energy.dat:
+ $(call bigeq_run)
+
+DATS=energy.dat
+
+energy.pdf: energy.dat
+ $(call gnuplot2pdf,$(basename $@))
+
+
+clean-aux:
+ rm -f $(addsuffix .tikz.tex, $(PROJECT))
+ rm -f *.aux *.log
+
+clean-dat:
+ rm -f $(DATS)
+
+clean-pdf:
+ rm -f $(addsuffix .pdf, $(PROJECT))
+
+clean: clean-aux clean-pdf
diff --git a/figs/energy.fig/energy.dat b/figs/energy.fig/energy.dat
new file mode 100644
index 0000000..3dcfb71
--- /dev/null
+++ b/figs/energy.fig/energy.dat
@@ -0,0 +1,100 @@
+ 1.000000000000000e-06 7.933345669932108e-06 1.703886592783066e-12
+ 1.204503540258781e-06 9.561695772478549e-06 3.497161949718074e-13
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+ 3.053855508833412e-06 2.434212593011697e-05 3.224578200780056e-14
+ 3.678379771828634e-06 2.935134616878758e-05 2.059872930370073e-14
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+ 5.722367659350220e+01 7.188205979063789e+02 1.781857723825451e-14
+ 6.892612104349709e+01 8.658721421294766e+02 1.398488788949389e-14
+ 8.302175681319753e+01 1.042997505438325e+03 1.067384424838066e-14
+ 1.000000000000000e+02 1.256346874319010e+03 8.542571473538560e-15
diff --git a/figs/energy.fig/energy.gnuplot b/figs/energy.fig/energy.gnuplot
new file mode 100644
index 0000000..377a2e9
--- /dev/null
+++ b/figs/energy.fig/energy.gnuplot
@@ -0,0 +1,36 @@
+set ylabel "$\\displaystyle\\frac{e}{\\rho}$" norotate offset -1,0
+set xlabel "$\\rho$"
+
+set xtics 1e-6, 100, 100
+set xtics add ("$10^{-6}$" 0.000001, "$10^{-4}$" 0.0001, "$10^{-2}$" 0.01, "$1$" 1.0, "$10^2$" 100)
+unset mxtics
+
+set ytics 8,1
+set mytics 2
+
+set xrange [0.000001:100]
+set yrange [7.5:13.5]
+
+# default output canvas size: 12.5cm x 8.75cm
+set term lua tikz size 8,6 standalone
+
+set key off
+
+
+# set linestyle
+set style line 1 linetype rgbcolor "#4169E1" linewidth 3
+set style line 2 linetype rgbcolor "#DC143C" linewidth 3
+set style line 3 linetype rgbcolor "#32CD32" linewidth 3
+set style line 4 linetype rgbcolor "#4B0082" linewidth 3
+set style line 5 linetype rgbcolor "#DAA520" linewidth 3
+
+set pointsize 1
+
+set logscale x
+
+a=1.25435641059
+
+plot "energy.dat" using 1:($2/$1) with lines linestyle 4 ,\
+ 2*pi*a*(1+128/15/sqrt(pi)*sqrt(x*a**3)) linestyle 5 dashtype "." ,\
+ 4*pi linestyle 3 dashtype "." ,\
+ "holzmann_2019-12-25.dat" using 1:($2/$1) with points linestyle 2
diff --git a/figs/energy.fig/holzmann_2019-12-25.dat b/figs/energy.fig/holzmann_2019-12-25.dat
new file mode 100644
index 0000000..96689cb
--- /dev/null
+++ b/figs/energy.fig/holzmann_2019-12-25.dat
@@ -0,0 +1,11 @@
+## data from M. Holzmann, 2019-09-22
+# rho E0 n0
+1e-6 7.902e-6
+1e-4 8.3441e-4 0.0171
+1e-3 9.13384e-3 0.0481
+1e-2 1.061073e-1 0.0871
+1e-1 1.19182e+0 0.0851
+1e-0 1.24302e+1 0.0587
+1e+1 1.25442e+2 0.0319
+5e+1 6.28032e+2 0.021
+
diff --git a/libs/ian-presentation.cls b/libs/ian-presentation.cls
new file mode 100644
index 0000000..91bd487
--- /dev/null
+++ b/libs/ian-presentation.cls
@@ -0,0 +1,187 @@
+%%
+%% Ian's presentation class
+%%
+
+%% TeX format
+\NeedsTeXFormat{LaTeX2e}[1995/12/01]
+
+%% class name
+\ProvidesClass{ian-presentation}[2017/09/29]
+
+\def\ian@defaultoptions{
+ \pagestyle{plain}
+ \RequirePackage{color}
+ \RequirePackage{amssymb}
+}
+
+%% paper dimensions
+\setlength\paperheight{240pt}
+\setlength\paperwidth{427pt}
+
+%% fonts
+\input{size11.clo}
+\DeclareOldFontCommand{\rm}{\normalfont\rmfamily}{\mathrm}
+\DeclareOldFontCommand{\sf}{\normalfont\sffamily}{\mathsf}
+\DeclareOldFontCommand{\tt}{\normalfont\ttfamily}{\mathtt}
+\DeclareOldFontCommand{\bf}{\normalfont\bfseries}{\mathbf}
+\DeclareOldFontCommand{\it}{\normalfont\itshape}{\mathit}
+
+%% text dimensions
+\textheight=208pt
+\textwidth=370pt
+\hoffset=-1in
+\voffset=-1in
+\oddsidemargin=24pt
+\evensidemargin=24pt
+\topmargin=8pt
+\headheight=0pt
+\headsep=0pt
+\marginparsep=0pt
+\marginparwidth=0pt
+\footskip=16pt
+
+
+%% remove default skips
+\parindent=0pt
+\parskip=0pt
+\baselineskip=0pt
+
+%% something is wrong with \thepage, redefine it
+\gdef\thepage{\the\c@page}
+
+%% correct vertical alignment at the end of a document
+\AtEndDocument{
+ % save total slide count
+ \immediate\write\@auxout{\noexpand\gdef\noexpand\slidecount{\thepage}}
+ \vfill
+ \eject
+}
+
+
+%% footer
+\def\ps@plain{
+ \def\@oddhead{}
+ \def\@evenhead{\@oddhead}
+ \def\@oddfoot{\tiny\hfill\thepage/\safe\slidecount\hfill}
+ \def\@evenfoot{\@oddfoot}
+}
+\def\ps@empty{
+ \def\@oddhead{}
+ \def\@evenhead{\@oddhead}
+ \def\@oddfoot{}
+ \def\@evenfoot{\@oddfoot}
+}
+
+
+%% title of slide
+\def\title#1{
+ \hfil{\bf\large #1}\par
+ \hfil\vrule width0.75\textwidth height0.3pt\par
+ \vskip5pt
+}
+
+
+%% hyperlinks
+% hyperlinkcounter
+\newcounter{lncount}
+% hyperref anchor
+\def\hrefanchor{%
+\stepcounter{lncount}%
+\hypertarget{ln.\thelncount}{}%
+}
+
+%% define a command and write it to aux file
+\def\outdef#1#2{%
+ % define command%
+ \expandafter\xdef\csname #1\endcsname{#2}%
+ % hyperlink number%
+ \expandafter\xdef\csname #1@hl\endcsname{\thelncount}%
+ % write command to aux%
+ \immediate\write\@auxout{\noexpand\expandafter\noexpand\gdef\noexpand\csname #1\endcsname{\csname #1\endcsname}}%
+ \immediate\write\@auxout{\noexpand\expandafter\noexpand\gdef\noexpand\csname #1@hl\endcsname{\thelncount}}%
+}
+
+%% can call commands even when they are not defined
+\def\safe#1{%
+ \ifdefined#1%
+ #1%
+ \else%
+ {\color{red}\bf?}%
+ \fi%
+}
+
+
+%% itemize
+\newlength\itemizeskip
+% left margin for items
+\setlength\itemizeskip{20pt}
+\newlength\itemizeseparator
+% space between the item symbol and the text
+\setlength\itemizeseparator{5pt}
+% penalty preceding an itemize
+\def\itemizepenalty{0}
+% counter counting the itemize level
+\newcounter{itemizecount}
+
+% item symbol
+\def\itemizept#1{
+ \ifnum#1=1
+ \textbullet
+ \else
+ $\scriptstyle\blacktriangleright$
+ \fi
+}
+
+\newlength\current@itemizeskip
+\setlength\current@itemizeskip{0pt}
+\def\itemize{
+ \par\penalty\itemizepenalty\medskip\penalty\itemizepenalty
+ \addtocounter{itemizecount}{1}
+ \addtolength\current@itemizeskip{\itemizeskip}
+ \leftskip\current@itemizeskip
+}
+\def\enditemize{
+ \addtocounter{itemizecount}{-1}
+ \addtolength\current@itemizeskip{-\itemizeskip}
+ \par\leftskip\current@itemizeskip
+ \medskip
+}
+\newlength\itempt@total
+\def\item{
+ \settowidth\itempt@total{\itemizept\theitemizecount}
+ \addtolength\itempt@total{\itemizeseparator}
+ \par
+ \medskip
+ \hskip-\itempt@total\itemizept\theitemizecount\hskip\itemizeseparator
+}
+
+%% enumerate
+\newcounter{enumerate@count}
+\def\enumerate{
+ \setcounter{enumerate@count}0
+ \let\olditem\item
+ \let\olditemizept\itemizept
+ \def\item{
+ % counter
+ \stepcounter{enumerate@count}
+ % set header
+ \def\itemizept{\theenumerate@count.}
+ % hyperref anchor
+ \hrefanchor
+ % define tag (for \label)
+ \xdef\tag{\theenumerate@count}
+ \olditem
+ }
+ \itemize
+}
+\def\endenumerate{
+ \enditemize
+ \let\item\olditem
+ \let\itemizept\olditemizept
+}
+
+
+%% end
+\ian@defaultoptions
+
+\endinput