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Fermi liquid theory of ultra-cold trapped Fermi gases: Implications for Pseudogap Physics and Other Strongly Correlated Phases

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arxiv 1002.4652 v3 pith:ZNXWPHPQ submitted 2010-02-24 cond-mat.quant-gas cond-mat.str-elcond-mat.supr-con

Fermi liquid theory of ultra-cold trapped Fermi gases: Implications for Pseudogap Physics and Other Strongly Correlated Phases

classification cond-mat.quant-gas cond-mat.str-elcond-mat.supr-con
keywords fermiliquidgasesphysicstheoryultra-coldaddressingapplied
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show how Fermi liquid theory can be applied to ultra-cold Fermi gases, thereby expanding their "simulation" capabilities to a class of problems of interest to multiple physics sub-disciplines. We introduce procedures for measuring and calculating position dependent Landau parameters. This lays the ground work for addressing important controversial issues: (i) the suggestion that thermodynamically, the normal state of a unitary gas is indistinguishable from a Fermi liquid (ii) that a fermionic system with strong repulsive contact interactions is associated with either ferromagnetism or localization; this relates as well to $^3$He and its p-wave superfluidity.

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