Ground-state properties of even-even N = Z nuclei within the Hartree-Fock-BCS and higher Tamm–Dancoff approaches
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | BONNEAU, L. | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | QUENTIN, P. | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | SIEJA, K. | |
| dc.date.issued | 2007 | |
| dc.identifier.issn | 2469-9985 | |
| dc.description.abstractEn | We calculate the ground-state properties of well deformed, even-even N = Z nuclei in the region between 56Ni and 100Sn within two different approaches, focusing on the binding energy and deformation and pairing properties. First, we employ the Hartree-Fock-BCS (HFBCS) approximation with the Skyrme effective nucleon-nucleon interaction and discuss how the results depend on the parametrization of the interaction and on the pairing force parameters adjusted in various schemes to reproduce the experimental odd-even mass differences. Then, within the Higher Tamm-Dancoff Approximation (HTDA), which explicitly conserves the particle number, we calculate the same properties starting from the HFBCS solutions. The HTDA treatment of the ground-state correlations is converged within a n-particle-n-hole expansion using up to n = 4 particle-hole excitations of the pair type (in the sense of Cooper pairs). We compare the ground-state properties calculated in these two descriptions of pairing correlations and deduce the importance of the particle-number conservation in weak pairing regimes. Finally, we extend the HTDA calculations so as to include the proton-neutron residual interaction and investigate the role of proton-neutron pairing on the above ground-state properties. | |
| dc.language.iso | en | |
| dc.publisher | American Physical Society | |
| dc.title.en | Ground-state properties of even-even N = Z nuclei within the Hartree-Fock-BCS and higher Tamm–Dancoff approaches | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1103/PhysRevC.76.014304 | |
| dc.subject.hal | Physique [physics]/Physique Nucléaire Théorique [nucl-th] | |
| dc.identifier.arxiv | nucl-th/0703102 | |
| bordeaux.journal | Physical Review C | |
| bordeaux.page | 014304 | |
| bordeaux.volume | 76 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | in2p3-00292985 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//in2p3-00292985v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20C&rft.date=2007&rft.volume=76&rft.spage=014304&rft.epage=014304&rft.eissn=2469-9985&rft.issn=2469-9985&rft.au=BONNEAU,%20L.&QUENTIN,%20P.&SIEJA,%20K.&rft.genre=article |
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