Phase Diagram Of A Strongly Interacting Polarized Fermi Gas In One Dimension

Hu, H., Liu, Xia-Ji and Drummond, Peter D. (2007) Phase Diagram Of A Strongly Interacting Polarized Fermi Gas In One Dimension. Physical Review Letters, 98 7: 070403-1-070403-4. doi:10.1103/PhysRevLett.98.070403

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Author Hu, H.
Liu, Xia-Ji
Drummond, Peter D.
Title Phase Diagram Of A Strongly Interacting Polarized Fermi Gas In One Dimension
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2007-02-14
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.98.070403
Open Access Status File (Publisher version)
Volume 98
Issue 7
Start page 070403-1
End page 070403-4
Total pages 4
Editor Basbas, G
Sandweiss, J
Schuhmann, R. B.
Brown, S. G.
Place of publication United States
Publisher American Physical Society
Collection year 2008
Language eng
Subject C1
240204 Condensed Matter Physics - Other
780102 Physical sciences
Abstract Based on the integrable Gaudin model and local density approximation, we discuss the ground state of a one-dimensional trapped Fermi gas with imbalanced spin population, for an arbitrary attractive interaction. A phase separation state, with a polarized superfluid core immersed in an unpolarized superfluid shell, emerges below a critical spin polarization. Above it, coexistence of polarized superfluid matter and a fully polarized normal gas is favored. These two exotic states could be realized experimentally in highly elongated atomic traps, and diagnosed by measuring the lowest density compressional mode. We identify the polarized superfluid as having an Fulde-Ferrell-Larkin-Ovchinnikov structure, and predict the resulting mode frequency as a function of the spin polarization.
Keyword Physics, Multidisciplinary
Q-Index Code C1
Q-Index Status Confirmed Code

 
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Created: Tue, 06 May 2008, 10:49:17 EST by Stephanie Golding on behalf of School of Mathematics & Physics