2 papers
cond-mat.quant-gas2026
Renormalised thermodynamics for Bose gases from low to critical temperatures
Michael H. Heinrich, Alexander Wowchik, Jürgen Berges
We compute thermodynamic properties of dilute Bose gases using non-perturbative approximations of the two-particle irreducible (2PI) effective action. It is shown how to systematic…
cond-mat.quant-gas2025
Extracting the symmetries of nonequilibrium quantum many-body systems
Aleksandr N. Mikheev, Viktoria Noel, Ido Siovitz +3
Symmetries play a pivotal role in our understanding of the properties of quantum many-body systems. While there are theorems and a well-established toolbox for systems in thermal e…