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Publications du CENBG |  |
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Publications du CENBG | |
| HAL : in2p3-00687083, version 1 |
| DOI : 10.1103/PhysRevC.85.034325 |
| Fiche détaillée |  Récupérer au format |
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| Physical Review C 85 (2012) 034325 |
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| Evaluation of overlaps between arbitrary fermionic quasiparticle vacua |
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| B. Avez1M. Bender1 |
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| (2012) |
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| We 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. |
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| 1 : | CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan |
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| Thème(s) | : | Physique/Physique Nucléaire Théorique |
| in2p3-00687083, version 1 | |
| http://hal.in2p3.fr/in2p3-00687083 | |
| oai:hal.in2p3.fr:in2p3-00687083 | |
| Contributeur : Nathalie Martin | |
| Déposé pour le compte de : | |
| Soumis le : Jeudi 12 Avril 2012, 10:58:37 | |
| Dernière modification le : Jeudi 12 Avril 2012, 11:38:59 | |
