BCS-BEC crossover in dense relativistic matter: Collective excitations

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dc.creatorBrauner, Tomas
dc.date2008-03-17
dc.date2008-04-02
dc.date.accessioned2026-07-07T11:49:08Z
dc.date.available2026-07-07T11:49:08Z
dc.descriptionWe study the relativistic BCS-BEC crossover within a class of Nambu-Jona-Lasinio type models, including arbitrary Lorentz-scalar pairing channels. Using the mean-field approximation we investigate spectral properties of the collective bosonic excitations in the superfluid phase, with particular attention to the Nambu--Goldstone bosons of the broken symmetry. This is a first step towards a systematic improvement of the mean-field approximation by including the fluctuation effects. The general results are illustrated on pairing in dense two-flavor quark matter - the two-flavor color superconductor.
dc.description12 pages, REVTeX4, 7 eps figures; v2: expanded introduction, added references; version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0803.2422
dc.identifierhttp://arxiv.org/abs/0803.2422
dc.identifierPhys.Rev.D77:096006,2008
dc.identifierdoi:10.1103/PhysRevD.77.096006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203133
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleBCS-BEC crossover in dense relativistic matter: Collective excitations
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