论文标题
基于手性有效野外理论和高斯工艺模拟器的任意质子部分和温度的状态核方程
Nuclear equation of state for arbitrary proton fraction and temperature based on chiral effective field theory and a Gaussian process emulator
论文作者
论文摘要
我们根据手性有效的田间理论相互作用与近代到隔离顺序的有效野外理论相互作用计算有限温度下的不对称核物质状态方程。我们的结果评估了多体计算和手性膨胀的理论不确定性。使用高斯工艺模拟器进行自由能，我们通过一致的衍生物来得出物质的热力学特性，并使用高斯工艺访问任意质子分数和温度。这使得在有限温度下的beta平衡方程以及声音和对称能量的速度和对称能量的第一个非参数计算。此外，我们的结果表明，压力的热部分随着密度的增加而降低。
We calculate the equation of state of asymmetric nuclear matter at finite temperature based on chiral effective field theory interactions to next-to-next-to-next-to-leading order. Our results assess the theoretical uncertainties from the many-body calculation and the chiral expansion. Using a Gaussian process emulator for the free energy, we derive the thermodynamic properties of matter through consistent derivatives and use the Gaussian process to access arbitrary proton fraction and temperature. This enables a first nonparametric calculation of the equation of state in beta equilibrium, and of the speed of sound and the symmetry energy at finite temperature. Moreover, our results show that the thermal part of the pressure decreases with increasing densities.
