Physics – Condensed Matter – Quantum Gases
Scientific paper
2010-02-24
Phys. Rev. A82:013603,2010
Physics
Condensed Matter
Quantum Gases
4 pages, 2 figures, revised version
Scientific paper
10.1103/PhysRevA.82.013603
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.
Chien Chih-Chun
Levin Kathryn
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