AG Mathematische Physik, Lukas Reichmann (FAU): The excitation spectrum of Bose gases in the Gross-Pitaevskii regime

Abstract: I will talk about how to apply a strategy developed by Nam
and Triay to prove the low-energy excitation spectrum for Bose gases in
the Gross-Pitaevskii regime in the 3-dimensional box with side length
1. This extends previous results by Boccato-Brennecke-Cenatiempo-Schlein
and Hainzl-Schlein-Triay to interaction potentials that are not
necessarily compactly supported or spherically symmetric. This is based
on joint work with A. Triay.