Strongly interacting two-dimensional Fermi gases

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Abstract

We review the current understanding of the uniform two-dimensional (2D) Fermi gas with short-range interactions. We first outline the basics of two-body scattering in 2D, including a discussion of how such a 2D system may be realized in practice using an anisotropic confining potential. We then discuss the thermodynamic and dynamical properties of 2D Fermi gases, which cold-atom experiments have only just begun to explore. Of particular interest are the different pairing regimes as the interparticle attraction is varied; the superfluid transition and associated finite-temperature phenomenology; few-body properties and their impact on the many-body system; the “Fermi polaron” problem; and the symmetries underlying the collective modes.Where possible, we include the contributions from 2Dexperiment.An underlying theme throughout is the effect of the quasi-2D geometry, which we view as an added richness to the problem rather than an unwanted complication.
Original languageEnglish
Title of host publicationAnnual Review of Cold Atoms and Molecules
Subtitle of host publicationVolume 3
EditorsKirk W Madison, Kai Bongs, Lincoln D Carr, Ana Maria Rey, Hui Zhai
Place of PublicationSingapore
PublisherWorld Scientific Publishing
Chapter1
Pages1-75
Number of pages75
Volume3
ISBN (Print)9789814667739
DOIs
Publication statusPublished - 2015
Externally publishedYes

Publication series

NameANNUAL REVIEW OF COLD ATOMS AND MOLECULES
PublisherWorld Scientific Publishing Co. Pte. Ltd.
Volume3
ISSN (Print)2315-4926

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