Derivation of hydrodynamics for the gapless mode in the BEC-BCS crossover from the exact one-loop effective action

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dc.creatorLee, Da-Shin
dc.creatorLin, Chi-Yong
dc.creatorRivers, Ray J.
dc.date2006-06-09
dc.date2006-12-11
dc.date.accessioned2026-07-07T10:21:57Z
dc.date.available2026-07-07T10:21:57Z
dc.descriptionWe show that many hydrodynamical properties of the BEC/BCS crossover in the presence of a Feshbach resonance at T=0 can be derived easily from the derivative expansion of the (exact) fully renormalized one-loop effective action. In particular, we calculate the velocity of sound throughout the BCS and BEC regimes and derive the generalized superfluid continuity equations for the composite two-fluid system.
dc.descriptionFour pages, 1 figure. Whereas v.2 contained additional references, but was otherwise unchanged, this new version contains new material concerning our ability to provide a hydrodynamical description of the BEC/BSC system. This explains the change of title. Our old results are unaffected
dc.identifierhttps://arxiv.org/abs/cond-mat/0606243
dc.identifierhttp://arxiv.org/abs/cond-mat/0606243
dc.identifierPhys.Rev.Lett.98:020603,2007
dc.identifierdoi:10.1103/PhysRevLett.98.020603
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/175349
dc.subjectOther Condensed Matter
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDerivation of hydrodynamics for the gapless mode in the BEC-BCS crossover from the exact one-loop effective action
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