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Quasicondensation in Two-Dimensional Fermi Gases.

Authors :
Wu CT
Anderson BM
Boyack R
Levin K
Source :
Physical review letters [Phys Rev Lett] 2015 Dec 11; Vol. 115 (24), pp. 240401. Date of Electronic Publication: 2015 Dec 09.
Publication Year :
2015

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 Berezinskiĭ-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.

Details

Language :
English
ISSN :
1079-7114
Volume :
115
Issue :
24
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
26705613
Full Text :
https://doi.org/10.1103/PhysRevLett.115.240401