Identical bands at normal deformation: Necessity of going beyond the mean-field approach

Yang Sun; Cheng-Li Wu; Da Hsuan Feng; J. Luis Egido; Mike Guidry

doi:10.1103/PhysRevC.53.2227

Identical bands at normal deformation: Necessity of going beyond the mean-field approach

Yang Sun, Cheng-Li Wu, Da Hsuan Feng, J. Luis Egido, and Mike Guidry

Phys. Rev. C 53, 2227 – Published 1 May 1996

Abstract

The validity of BCS theory has been questioned because the appearance of normally deformed identical bands in odd and even nuclei seems to contradict the conventional understanding of the blocking effect. This problem is examined with the projected shell model (PSM), which projects good angular momentum states and includes many-body correlations in both deformation and pairing channels. Satisfactory reproduction of identical band data by the PSM suggests that it may be necessary to go beyond the mean field to obtain a quantitative account of identical bands. © 1996 The American Physical Society.

Received 22 December 1994

DOI:https://doi.org/10.1103/PhysRevC.53.2227

Authors & Affiliations

Yang Sun, Cheng-Li Wu, Da Hsuan Feng, J. Luis Egido, and Mike Guidry

Department of Physics and Atmospheric Science, Drexel University, Philadelphia, Pennsylvania 19104
Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain
Joint Institute for Heavy Ion Research, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
Department of Physics, Chung-Yuan Christian University, Chung-Li, Taiwan 32023, Republic of China
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996
Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

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Vol. 53, Iss. 5 — May 1996

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Physical Review C

covering nuclear physics