论文标题
核子有效质量在热量中
Nucleon effective mass in hot dense matter
论文作者
论文摘要
在有限温度下，在Brueckner-Hartree-fock多体方法的框架内研究了核子有效质量。据报道，使用Argonne $ v_ {18} $相互作用的自洽计算，包括微观三体力，对于不同的温度和质子分数，核饱和度密度的几倍。我们的计算基于对质量中心动量的确切处理，而不是以前的工作中使用的平均摩托近似值。我们详细讨论温度以及三体力，密度和同胞不对称的影响。我们还提供了将这些依赖性考虑在内的有效质量的分析拟合。基于可稳定物质的结果，简要讨论了对中子恒星冷却的温度影响。
Nucleon effective masses are studied in the framework of the Brueckner-Hartree-Fock many-body approach at finite temperature. Self-consistent calculations using the Argonne $V_{18}$ interaction including microscopic three-body forces are reported for varying temperature and proton fraction up to several times the nuclear saturation density. Our calculations are based on the exact treatment of the center-of-mass momentum instead of the average-momentum approximation employed in previous works. We discuss in detail the effects of the temperature together with those of the three-body forces, the density, and the isospin asymmetry. We also provide an analytical fit of the effective mass taking these dependencies into account. The temperature effects on the cooling of neutron stars are briefly discussed based on the results for betastable matter.
