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Evaluation of overlaps between arbitrary fermionic quasiparticle vacua

hal.structure.identifierPhysique théorique [THEORIE]
dc.contributor.authorAVEZ, B.
hal.structure.identifierPhysique théorique [THEORIE]
dc.contributor.authorBENDER, M.
dc.date.issued2012
dc.identifier.issn2469-9985
dc.description.abstractEnWe derive an expression that allows for the unambiguous evaluation of the overlap between two arbitrary quasiparticle vacua, including its sign. Our expression is based on the Pfaffian of a skew-symmetric matrix, extending the overlap formula recently proposed by Robledo [ Phys. Rev. C 79 021302 (2009)] to the most general case of quasiparticle vacua, including the one of the overlap between two different blocked n-quasiparticle states for either even or odd systems. The powerfulness of the method is illustrated for a few typical matrix elements that appear in realistic angular-momentum-restored generator coordinate method calculations when breaking time-reversal invariance and using the full model space of occupied single-particle states.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enEvaluation of overlaps between arbitrary fermionic quasiparticle vacua
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevC.85.034325
dc.subject.halPhysique [physics]/Physique Nucléaire Théorique [nucl-th]
dc.identifier.arxiv1109.2078
bordeaux.journalPhysical Review C
bordeaux.page034325
bordeaux.volume85
bordeaux.peerReviewedoui
hal.identifierin2p3-00687083
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00687083v1
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