Exact Relations for a Strongly-interacting Fermi Gas from the Operator Product Expansion

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dc.creatorBraaten, Eric
dc.creatorPlatter, Lucas
dc.date2008-03-07
dc.date.accessioned2026-07-07T11:33:04Z
dc.date.available2026-07-07T11:33:04Z
dc.descriptionThe momentum distribution in a Fermi gas with two spin states and a large scattering length has a tail that falls off like 1/k^4 at large momentum k, as pointed out by Shina Tan. He used novel methods to derive exact relations between the coefficient of the tail in the momentum distribution and various other properties of the system. We present simple derivations of these relations using the operator product expansion for quantum fields. We identify the coefficient as the integral over space of the expectation value of a local operator that measures the density of pairs.
dc.description4 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0803.1125
dc.identifierhttp://arxiv.org/abs/0803.1125
dc.identifierPhys.Rev.Lett.100:205301,2008
dc.identifierdoi:10.1103/PhysRevLett.100.205301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197768
dc.subjectOther Condensed Matter
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleExact Relations for a Strongly-interacting Fermi Gas from the Operator Product Expansion
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