Finite-Temperature Disordered Bosons in Two Dimensions

G. Bertoli, V. P. Michal, B. L. Altshuler, G. V. Shlyapnikov

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)
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Abstract

We study phase transitions in a two dimensional weakly interacting Bose gas in a random potential at finite temperatures. We identify superfluid, normal fluid, and insulator phases and construct the phase diagram. At T=0 one has a tricritical point where the three phases coexist. The truncation of the energy distribution at the trap barrier, which is a generic phenomenon in cold atom systems, limits the growth of the localization length and in contrast to the thermodynamic limit the insulator phase is present at any temperature.

Original languageEnglish
Article number030403
Number of pages6
JournalPhysical Review Letters
Volume121
Issue number3
DOIs
Publication statusPublished - 2018

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