Canonical approach to finite density QCD with multiple precision computation
Canonical approach to finite density QCD with multiple precision computation
复制标题
具有多精度计算的有限密度 QCD 规范方法
DOI：
10.1103/physrevd.93.094508
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
and Shotaro Oka
中科院分区：
文献类型：
--
作者：
Ryutaro Fukuda;Atsushi Nakamura;and Shotaro Oka
在这项研究中，我们计算了热力学观测值，即压力，重子数密度和重子磁化率，对重子化学势的依赖，通过晶格量子色动力学使用正则方法。我们将结果与使用多参数加权（MPR）方法得到的结果进行了比较。这些方法的结果在MPR方法误差得到控制的区域内是非常一致的。标准方法在温度范围内产生可靠的结果。多重精度运算在正则配分函数的求值中起着重要的作用。
In this study, we calculated the dependence of thermodynamic observables, namely, pressure, baryon number density, and baryon susceptibility, on the baryon chemical potentialthrough lattice quantum chromodynamics using the canonical approach. We compare the results with those obtained using the multiparameter reweighting (MPR) method. The results of these methods were found to be in very good agreement in the regions where the errors of the MPR method are under control. The canonical method yields reliable results up to, whereis the temperature. Multiple precision operations play important roles in the evaluation of canonical partition functions.