论文标题

在BHF方法中,在有限温度下的准确核对称能

Accurate nuclear symmetry energy at finite temperature within a BHF approach

论文作者

Lu, Jia-Jing, Li, Fan, Li, Zeng-Hua, Chen, Chong-Yang, Burgio, G. F., Schulze, H. -J.

论文摘要

我们在有限的温度下在Brueckner-Hartree-fock方法中计算不对称核物质的自由能,特别注意依赖对同胞素不对称的依赖。一阶和二阶对称能是由密度和温度的函数以及有用的参数化确定的。我们发现与二次同音依赖性的小偏差以及对(原始)中子星体结构的相应影响非常小。

We compute the free energy of asymmetric nuclear matter in a Brueckner-Hartree-Fock approach at finite temperature, paying particular attention to the dependence on isospin asymmetry. The first- and second-order symmetry energies are determined as functions of density and temperature and useful parametrizations are provided. We find small deviations from the quadratic isospin dependence and very small corresponding effects on (proto)neutron star structure.

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