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Fully renormalized quasi-particle random phase approximation, spurious states and ground state correlations

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dc.contributor.authors Kuliev, AA; Faessler, A; Guner, M; Rodin, V;
dc.date.accessioned 2020-01-20T08:02:36Z
dc.date.available 2020-01-20T08:02:36Z
dc.date.issued 2004
dc.identifier.citation Kuliev, AA; Faessler, A; Guner, M; Rodin, V; (2004). Fully renormalized quasi-particle random phase approximation, spurious states and ground state correlations. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 30, 1267-1253
dc.identifier.issn 0954-3899
dc.identifier.uri https://hdl.handle.net/20.500.12619/32279
dc.identifier.uri https://doi.org/10.1088/0954-3899/30/9/023
dc.description.abstract An approach, called fully renormalized QRPA (FR-QRPA), which takes into account the Pauli principle for the ground state correlations (GSC) and fulfills the Ikeda sum rule has recently been developed. Here a new rotational invariant model of the V states is formulated within the FR-QRPA and deformed nuclei Nd-150, (SM)-S-154 and Er-168 are studied. Two different Hamiltonians are used to describe the low-lying excited states (the famous scissors mode). One Hamiltonian is constructed to be rotational invariant and the spurious rotational state is separated by moving its energy to zero. The second Hamiltonian mixes the spurious rotational state with different vibrational states having the same quantum numbers. The GSC measured by the number of quasiparticles in the ground state are studied for the Hamiltonians within the QRPA, R-QRPA and FR-QRPA approaches. The present investigation demonstrates an advantage of the FR-QRPA over the other approaches. Within the rotational invariant FR-QRPA the GSC are stronger than within the R-QRPA by about 20%. The spurious rotational state in the rotational invariant case contributes within the FR-QRPA more than 50% to the total number of quasiparticles in the ground state of the nuclei in question.
dc.language English
dc.publisher IOP PUBLISHING LTD
dc.subject Physics
dc.title Fully renormalized quasi-particle random phase approximation, spurious states and ground state correlations
dc.type Article
dc.identifier.volume 30
dc.identifier.startpage 1253
dc.identifier.endpage 1267
dc.contributor.department Sakarya Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü
dc.contributor.saüauthor Guliyev, Ali
dc.contributor.saüauthor Güner, Mehmet
dc.relation.journal JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
dc.identifier.wos WOS:000224281800024
dc.identifier.doi 10.1088/0954-3899/30/9/023
dc.identifier.eissn 1361-6471
dc.contributor.author Guliyev, Ali
dc.contributor.author Güner, Mehmet


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