Inhomogeneous Superconductivity in Condensed Matter and QCD

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dc.creatorCasalbuoni, Roberto
dc.creatorNardulli, Giuseppe
dc.date2003-05-07
dc.date.accessioned2026-07-07T11:31:24Z
dc.date.available2026-07-07T11:31:24Z
dc.descriptionInhomogeneous superconductivity arises when the species participating in the pairing phenomenon have different Fermi surfaces with a large enough separation. In these conditions it could be more favorable for each of the pairing fermions to stay close to its Fermi surface and, differently from the usual BCS state, for the Cooper pair to have a non zero total momentum. For this reason in this state the gap varies in space, the ground state is inhomogeneous and a crystalline structure might be formed. This situation was considered for the first time by Fulde, Ferrell, Larkin and Ovchinnikov, and the corresponding state is called LOFF. The spontaneous breaking of the space symmetries in the vacuum state is a characteristic feature of this phase and is associated to the presence of long wave-length excitations of zero mass. The situation described here is of interest both in solid state and in elementary particle physics, in particular in Quantum Chromo-Dynamics at high density and small temperature. In this review we present the theoretical approach to the LOFF state and its phenomenological applications using the language of the effective field theories.
dc.descriptionRevTex, 83 pages, 26 figures. Submitted to Review of Modern Physics
dc.identifierhttps://arxiv.org/abs/hep-ph/0305069
dc.identifierhttp://arxiv.org/abs/hep-ph/0305069
dc.identifierRev.Mod.Phys.76:263-320,2004
dc.identifierdoi:10.1103/RevModPhys.76.263
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197259
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectCondensed Matter
dc.subjectNuclear Theory
dc.titleInhomogeneous Superconductivity in Condensed Matter and QCD
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