有限重子密度下强耦合LQCD的连续时间模拟

Marc Klegrewe, W. Unger
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引用次数: 0

摘要

在有限重子化学势下,研究了离散空间连续欧几里得时间晶格上无限规范耦合极限下的晶格QCD $\mu_B$. 连续时间框架是基于发送的 $N_\tau\rightarrow \infty$ 在非扰动设置下固定温度时,裸各向异性趋于无穷大。这导致了一个无符号问题的算法,它允许我们研究整体 $\mu_B$-$T$ 飞机。我们在零化学势和手性极限的压强下构造泰勒展开所需的泰勒系数。因此,重子数密度的累积量以各种不同的方式测量,以提高精度。这些计算是基于我们的蠕虫型蒙特卡罗算法,具有聚合物恢复方案和直方图方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Continuous Time Simulations of Strong Coupling LQCD at Finite Baryon Density
We study lattice QCD in the limit of infinite gauge coupling on a discrete spatial yet continuous Euclidean time lattice at finite baryon chemical potential $\mu_B$. The continuous time framework is based on sending $N_\tau\rightarrow \infty$ and the bare anisotropy to infinity while fixing the temperature in a non-perturbative setup. This leads to a sign problem free algorithm that allows us to study the whole $\mu_B$-$T$ plane. We construct Taylor coefficients required for a Taylor expansion in the pressure at zero chemical potential and in the chiral limit. On that account, cumulants in the baryon number density are measured in various fashions to improve on accuracy. These calculations are based on our worm type Monte Carlo algorithm featuring a polymer resummation scheme and a histogram method.
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