Luttinger Liquid of Trimers in Fermi Gases with Unequal Masses

Orso, Giuliano and Burovski, Evgeni and Jolicoeur, Thierry (2010) Luttinger Liquid of Trimers in Fermi Gases with Unequal Masses. Physical review letters, 104 (6). -. ISSN 0031-9007

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Abstract

We investigate one dimensional attractive Fermi gases in spin-dependent optical lattices. We show that three-body bound states-"trimers''-exist as soon as the two tunneling rates are different. We calculate the binding energy and the effective mass of a single trimer. We then show numerically that for finite and commensurate densities n(up arrow) = n(down arrow)/2 an energy gap appears, implying that the gas is a one-component Luttinger liquid of trimers with suppressed superfluid correlations. The boundaries of this novel phase are given. We discuss experimental situations to test our predictions.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2010 The American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
54517
Deposited By:
Deposited On:
24 May 2012 15:52
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Sep 2020 01:17