Field-Theoretical description of the crossover between BCS and BEC in a non-Fermi superconductor

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dc.creatorMoca, C. P.
dc.creatorTifrea, I.
dc.creatorCrisan, M.
dc.date1999-04-14
dc.date.accessioned2026-07-07T03:13:15Z
dc.date.available2026-07-07T03:13:15Z
dc.descriptionUsing the field-theoretical methods we studied the evolution from BCS description of a non-Fermi superconductor to that of Bose-Einstein condensation (BEC) in one loop approximation. We showed that the repulsive interaction between composite bosons is determined by the exponent $α$ of the Anderson propagator in a two dimensional model. For $\a\neq 0$ the crossover is also continous and for $\a=0$ we obtain the case of the Fermi liquid.
dc.identifierhttps://arxiv.org/abs/cond-mat/9904197
dc.identifierhttp://arxiv.org/abs/cond-mat/9904197
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/29228
dc.subjectStrongly Correlated Electrons
dc.titleField-Theoretical description of the crossover between BCS and BEC in a non-Fermi superconductor
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