Ground state energy of a dilute two-dimensional Bose gas from the Bogoliubov free energy functional

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We extend the analysis of the Bogoliubov free energy functional to two dimensions at very low temperatures. For sufficiently weak interactions, we prove two term asymptotics for the ground state energy.

Original languageEnglish
Article number071903
JournalJournal of Mathematical Physics
Issue number7
Number of pages17
Publication statusPublished - 2019

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