Rights statement: © 2010 The American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Luttinger Liquid of Trimers in Fermi Gases with Unequal Masses
AU - Orso, Giuliano
AU - Burovski, Evgeni
AU - Jolicoeur, Thierry
N1 - © 2010 The American Physical Society
PY - 2010/2/12
Y1 - 2010/2/12
N2 - 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.
AB - 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.
U2 - 10.1103/PhysRevLett.104.065301
DO - 10.1103/PhysRevLett.104.065301
M3 - Journal article
VL - 104
SP - -
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 6
M1 - 065301
ER -