Numerical study of the Roberge-Weiss transition

Numerical study of the Roberge-Weiss transition
复制标题

罗伯格-韦斯转变的数值研究

DOI:
10.1103/physrevd.107.014508
复制
发表时间:
2023
期刊:
Phys. Rev. , 014508
影响因子:
--
通讯作者:
A. Nakamura 他
A. Nakamura 他
中科院分区:
--
文献类型:
--
作者:
V. Bornyakov;V. Gerasimeniuk;A. Nakamura 他

文献摘要

参考文献

被引文献

相似文献

我们研究了Roberge-Weiss相变数值。相变与夸克数密度在虚夸克化学势的特定值处的不连续性有关。我们利用多项式拟合函数对夸克数密度进行参数化,计算正则配分函数。我们证明,这种方法提供了一个很好的框架,分析格点QCD数据在有限的密度和高温。数值计算表明,在高温下,考虑到高夸克数对巨正则配分函数的贡献,李杨零点位于负真实的半轴上。这些李-杨零点具有非零的线性密度,这标志着Roberge-Weiss相变。我们证明了这种密度与跃迁线处的夸克数密度不连续性一致。
We study the Roberge-Weiss phase transition numerically. The phase transition is associated with the discontinuities in the quark-number density at specific values of imaginary quark chemical potential. We parametrize the quark-number densityby the polynomial fit function to compute the canonical partition functions. We demonstrate that this approach provides a good framework for analyzing lattice QCD data at finite density and a high temperature. We show numerically that, at high temperature, the Lee-Yang zeros lie on the negative real semiaxis provided that the high-quark-number contributions to the grand canonical partition function are taken into account. These Lee-Yang zeros have nonzero linear density, which signals the Roberge-Weiss phase transition. We demonstrate that this density agrees with the quark-number density discontinuity at the transition line.
有限密度和温度下晶格 QCD 中的规范配分函数
DOI: 10.22323/1.363.0271
发表时间: 2020
期刊: --
影响因子: --
作者:
A. Nakamura;V. Bornyakov;D. Boyda;V. Goy;A. Molochkov
通讯作者: A. Molochkov
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者:
T. Takaishi;P. Forcrand;A. Nakamura
通讯作者: A. Nakamura