Effect of pairing correlations on nuclear low-energy structure: BCS and general Bogoliubov transformation

J. Xiang, Z. P. Li, J. M. Yao, W. H. Long, P. Ring, J. Meng

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Low-lying nuclear states of Sm isotopes are studied in the framework of a collective Hamiltonian based on covariant energy density functional theory. Pairing correlations are treated by both BCS and Bogoliubov methods. It is found that the pairing correlations deduced from relativistic Hartree-Bogoliubov (RHB) calculations are generally stronger than those deduced by relativistic mean field plus BCS (RMF+BCS) with the same pairing force. By simply renormalizing the pairing strength, the diagonal part of the pairing field is changed in such a way that the essential effects of the off-diagonal parts of the pairing field neglected in the RMF+BCS calculations can be recovered, and consequently the low-energy structure is in a good agreement with the predictions of the RHB model.

Original languageEnglish
Article number057301
JournalPhysical Review C - Nuclear Physics
Volume88
Issue number5
DOIs
Publication statusPublished - 2013 Nov 12

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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