Cooper pairing with finite angular momentum: BCS vs Bose limits

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dc.creatorQuintanilla, J.
dc.creatorGyorffy, B. L.
dc.date2003-04-21
dc.date.accessioned2026-07-07T02:50:53Z
dc.date.available2026-07-07T02:50:53Z
dc.descriptionWe revisit the old problem of exotic superconductivity as Cooper pairing with finite angular momentum emerging from a central potential. Based on some general considerations, we suggest that the phenomenonn is associated with interactions that keep electrons at some particular, finite distance (r_{0}), and occurs at a range of intermediate densities (n\sim 1/r_{0}^{3}). We discuss the ground state and the critical temperature in the framework of a standard functional-integral theory of the BCS to Bose crossover. We find that, due to the lower energy of two-body bound states with (l=0), the rotational symmetry of the ground state is always restored on approaching the Bose limit. Moreover in that limit the critical temperature is always higher for pairs with (l=0.) The breaking of the rotational symmetry of the continuum by the superfluid state thus seems to be a property of weakly-attractive, non-monotonic interaction potentials, at intermediate densities.
dc.descriptionProceedings of SCENM02 (to appear in J. Phys. A)
dc.identifierhttps://arxiv.org/abs/cond-mat/0304462
dc.identifierhttp://arxiv.org/abs/cond-mat/0304462
dc.identifierJ. Phys. A: Math. Gen. 36, 9379-9390 (2003)
dc.identifierdoi:10.1088/0305-4470/36/35/322
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21263
dc.subjectSuperconductivity
dc.titleCooper pairing with finite angular momentum: BCS vs Bose limits
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