Phys. Rev. Lett. 103, 260403 (2009) [4 pages]Induced Interactions and the Superfluid Transition Temperature in a Three-Component Fermi GasReceived 26 August 2009; revised 4 December 2009; published 28 December 2009 We study many-body contributions to the effective interaction between fermions in a three-component Fermi mixture. We find that effective interactions induced by the third component can lead to a phase diagram different from that predicted if interactions with the third component are neglected. As a result, in a confining potential a superfluid shell structure can arise even for equal populations of the components. We also find a critical temperature for the BCS transition in a 6Li mixture which can deviate strongly from the one in a weakly interacting two-component system. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.260403
DOI:
10.1103/PhysRevLett.103.260403
PACS:
05.30.Fk, 03.65.-w, 03.75.Ss, 67.85.-d
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