Theoretical Nuclear Physics--Kaon Condensed Phase in Neutron Star Matter and Three-nucleon Force Effect

• 作者: Li Ang Li Zenghua
• 来源期刊: 近代物理研究所和兰州重离子加速器实验室年报：英文版
• 学科: 物理学
• 关键词: 中子星物质 核子相互作用 K介子 凝聚相 理论核物理 化学平衡 物质构成 rich
• 年，卷（期）: 2004,（1）
• 页码范围: 1
• 页数: 3页
• 分类号: O572.2

摘要

<正>Within the framework of the Brueckner-Hartree-Fock approach, the effect of a microscopic nuclear three-body force (TBF) on the composition of the kaon condensed phase in chemical equilibrium neutron star matter has been studied. In Fig.1 is plotted the composition of neutron star matter for three different values of a3ms. The kaon condensed phase of neutron star matter turns out to be proton-rich instead of neutron-rich. The three-body force has an important influence on the composition of the kaon condensed phase. Inclusion of the three-body force contribution in the nuclear symmetry energy results in a significant reduction of the proton and kaon fractions in the kaon condensed phase which is more proton-rich in the case of no three-body force. The equation of state of neuron star matter is found to be softened considerably by the kaon-nucleon interaction in the kaon condensed phase.