Quantum criticality of a Fermi gas with a spherical dispersion minimum

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dc.creatorYang, Kun
dc.creatorSachdev, Subir
dc.date2005-11-27
dc.date2006-05-10
dc.date.accessioned2026-07-07T12:55:47Z
dc.date.available2026-07-07T12:55:47Z
dc.descriptionWe describe the quantum phase transition of a Fermi gas occurring when the quasiparticle excitation energy has a minimum in momentum space which crosses zero on a sphere of radius k_0 \neq 0. The quasiparticles have a universal interaction which controls the physical properties in vicinity of the quantum critical point. We discuss applications to fermionic superfluids formed by pairing two fermion species, near the point where the densities of the two species become unequal.
dc.description4 pages, 1 figure; (v2) added clarifications in response to comments; (v3) published version with correction to lifetime result
dc.identifierhttps://arxiv.org/abs/cond-mat/0511641
dc.identifierhttp://arxiv.org/abs/cond-mat/0511641
dc.identifierPhys.Rev.Lett.96:187001,2006
dc.identifierdoi:10.1103/PhysRevLett.96.187001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224367
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleQuantum criticality of a Fermi gas with a spherical dispersion minimum
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