Equation of State of Asymmetric Nuclear Matter at Finite Temperature with a Three-body Force

• 作者: LiZenghua ZuoWei LuGuangcheng YongGaochan
• 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: 平衡状态 不对称核子物质 有限温度 三体力效应
• 年，卷（期）: 2003,（1）
• 页码范围: 19
• 页数: 1页
• 分类号: O571

摘要

In the present work, the equation of state of hot asymmetric nuclear matter nas Been investigated in the framework of the finite temperature Brueckner-Hartree-Fock (FTBHF) approach with a microscopic three-body force (TBF). The temperature dependence and the isospin dependence of the single particle properties, such as the proton and neutron single-particle potentials and effective masses have been studied. It is shown that the TBF gives a repulsive contribution to the proton or neutron single particle potential. The energy per nucleon versus asymmetry parameter is found to fulfill a parabolic relation as in the zero temperature case[I]. This means that the symmetry energy at finite temperature Esym can be extracted from' the energy difference between pure neutron matter and symmetric matter. The calculated symmetry energy is plotted in Fig.1. It