A hypernuclei and neutron star matter in a chiral SU(3) relativistic mean field model with a logarithmic potential

被引：20
作者：
Tsubakihara, K. [1 ]
Maekawa, H. [1 ]
Matsumiya, H. [1 ]
Ohnishi, A. [2 ]
机构：
[1] Hokkaido Univ, Fac Sci, Dept Phys, Sapporo, Hokkaido 0600810, Japan
[2] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
来源：
PHYSICAL REVIEW C | 2010年 / 81卷 / 06期
关键词：
EQUATION-OF-STATE; STRONG-COUPLING ANALYSIS; SYMMETRY-BREAKING; PHASE-TRANSITION; DYNAMICAL MODEL; NUCLEAR-MATTER; SIGMA-MODEL; LAMBDA; DENSITY; QCD;
D O I：
10.1103/PhysRevC.81.065206
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We develop a chiral SU(3) symmetric relativistic mean field model with a logarithmic potential of scalar condensates. Experimental and empirical data of symmetric nuclear matter saturation properties, bulk properties of normal nuclei, and separation energies of single-and double-Lambda hypernuclei are well explained. The nuclear matter equation of state (EOS) is found to be softened by sigma zeta mixing which comes from determinant interaction. The neutron star matter EOS is further softened by Lambda hyperons.
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页数：13
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