Non-relativistic interacting bosons at zero temperature, in two and three dimensions, are expected to exhibit a fascinating critical phase, famously known as condensate phase. Even though a proof of Bose-Einstein condensation in the thermodynamic limit is still beyond reach of the current available methods, in the past decades the mathematical physics community has gained an enhanced comprehension of other aspects of the macroscopic behavior of dilute Bose gases at zero temperature. In these notes we review part of these advances, by focusing on the strict relation among the occurrence of Bose-Einstein condensation on large – but finite – boxes, and the asymptotic expansion to the ground state energy of dilute Bose gases.

Energy expansions for dilute Bose gases from local condensation results: a review of known results

Basti Giulia
Membro del Collaboration Group
;
Caraci Cristina
Membro del Collaboration Group
;
Cenatiempo Serena
Membro del Collaboration Group
2023-01-01

Abstract

Non-relativistic interacting bosons at zero temperature, in two and three dimensions, are expected to exhibit a fascinating critical phase, famously known as condensate phase. Even though a proof of Bose-Einstein condensation in the thermodynamic limit is still beyond reach of the current available methods, in the past decades the mathematical physics community has gained an enhanced comprehension of other aspects of the macroscopic behavior of dilute Bose gases at zero temperature. In these notes we review part of these advances, by focusing on the strict relation among the occurrence of Bose-Einstein condensation on large – but finite – boxes, and the asymptotic expansion to the ground state energy of dilute Bose gases.
2023
Lee-Huang-Yang formula
Dilute Bose gases
Bose-Einstein condensation
Thermodynamic limit for interacting bosons
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/26464
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