We study two kinds of Dirac sea effects on the S-1(0) pairing gap in nuclear matter based on the relativistic Hartree approximation to quantum hadrodynamics and the Gor'kov formalism. We show that the vacuum fluctuation effect on the nucleon effective mass is more important than the direct coupling between the Fermi sea and the Dirac sea due to the pairing interaction. The effects of the high-momentum cutoff are also discussed. [S0556-2813(98)06712-0].
机构:
Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R ChinaChinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
Zuo, W.
Mi, A. J.
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R ChinaChinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
Mi, A. J.
Cui, C. X.
论文数: 0引用数: 0
h-index: 0
机构:
Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R ChinaChinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
Cui, C. X.
Lombardo, U.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Catania, I-95123 Catania, ItalyChinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China