期刊
PHYSICAL REVIEW C
卷 90, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.90.024322
关键词
-
资金
- Romanian Ministry of Education and Research [57/05.10.2011, PN-II-ID-PCE-2011-3-0596]
- [POSDRU/107/1.5/S/82514]
- [69370102/2009]
We propose a new approach for the treatment of isovector pairing in self-consistent mean field calculations which conserves exactly the isospin and the particle number in the pairing channel. The mean field is generated by a Skyrme-Hartree-Fock functional while the isovector pairing correlations are described in terms of quartets formed by two neutrons and two protons coupled to the total isospin T = 0. In this framework we analyze the contribution of isovector pairing to the symmetry and Wigner energies. It is shown that the isovector pairing provides a good description of the Wigner energy, which is not the case for the mean field calculations in which pairing is treated by BCS-like models.
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