Ian Jauslin

Interacting Bosons at intermediate densities

Rutgers University, New Jersey, USA

March 9, 2023

Carlen, Lieb and I have recently revived an old approach to the Bose gas, called the Simplified Approach, and found that it gives very accurate predictions at all densities, at least for a certain class of potentials. Using this method, we have investigated the intermediate density regime, whose analysis had previously been too difficult due to the perturbative nature of previous theoretical tools. In this talk, I will first review the Simplified Approach, and then present evidence for the fact that the behavior of Boson systems in the intermediate density regime is non-trivial.



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