Quasicondensation in Two-Dimensional Fermi Gases

Chien-Te Wu, Brandon M. Anderson, Rufus Boyack, K. Levin

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

In this paper we follow the analysis and protocols of recent experiments, combined with simple theory, to arrive at a physical understanding of quasi-condensation in two dimensional Fermi gases. A key signature of quasi-condensation, which contains aspects of Berezinskii-Kosterlitz-Thouless behavior, is a strong zero momentum peak in the pair momentum distribution. Importantly, this peak emerges at a reasonably well defined onset temperature. The resulting phase diagram, pair momentum distribution, and algebraic power law decay are compatible with recent experiments throughout the continuum from BEC to BCS.

Original languageEnglish
Article number240401
JournalPhysical Review Letters
Volume115
Issue number24
DOIs
StatePublished - 9 Dec 2015

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