The effect of temperature and pairing on nuclear pseudospin symmetry

Journal Article · Wed Jun 03 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3157790· OSTI ID:21316751

Malheiro, M; Lisboa, R; Carlson, B V ^[1]; Alberto, P ^[2]

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1. Departamento de Fisica, Instituto Tecnologico de Aeronautica, Centro Tecnico Aeroespacial, 12228-900 Sao Jose dos Campos, Sao Paulo (Brazil)
2. Departamento de Fisica e Centro de Fisica Computacional, Universidade de Coimbra, P-3004-516 Coimbra (Portugal)

We study the effects of temperature andpairing on pseudospin symmetry in spherical and deformed nucleus using the Dirac-Hartree-Bogoliubov (DHB) formalism. We include temperature in the DHB equation using the Matsubara formalism and analyze changes in the neutron single particle levels with the temperature. We show that the effect of temperature on the pseudospin energy splitting is small. We find that this splitting decreases at high temperatures and that pseudospin partners are almost degenerate in deformed hot nuclei, indicating the dependence of pseudospin symmetry on the nuclear surface. Furthermore, for reasonable values of the pairing interaction, we also show that pairing does not affect the pseudospin symmetry in deformed nuclei. Finally, we find that the effect of temperature on pseudospin doublets is more pronounced in spherical nuclei than in deformed ones.

• OSTI ID: 21316751
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1139; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEFORMED NUCLEI
HARTREE-FOCK-BOGOLYUBOV THEORY
HOT NUCLEI
NEUTRONS
NUCLEAR MATTER
NUCLEAR STRUCTURE
NUCLEAR TEMPERATURE
PAIRING INTERACTIONS
SINGLE-PARTICLE MODEL
SPHERICAL CONFIGURATION
SPIN
SYMMETRY