Ab initio study of the thermodynamics of quantum chromodynamics on the lattice at zero and finite densities
Ab initio study of the thermodynamics of quantum chromodynamics on the lattice at zero and finite densities
复制标题
零密度和有限密度晶格量子色动力学热力学的从头算研究
DOI：
10.1093/ptep/pts005
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
and Takashi Umeda
中科院分区：
文献类型：
--
作者：
Shinji Ejiri;Kazuyuki Kanaya;and Takashi Umeda
Whot-QCD的合作正在推进一系列利用改进的威尔逊夸克在有限温度和密度下的量子色动力学(QCD)的晶格研究。由于威尔逊型夸克比更广泛使用的交错型夸克需要更多的计算资源，因此必须发展和应用各种理论和计算技术。在本文中，我们介绍了固定尺度方法和AT积分方法、基于累积量展开的高斯法和直方图法与重加权技术相结合的方法。利用这些方法，我们首次研究了威尔逊型夸克的有限密度QCD，并首次计算了威尔逊型夸克的2+1种类型的物态方程。我们介绍了这些研究的结果，并讨论了在有限的温度和密度下，2+1风味QCD在物理点的性质的澄清的前景。
The WHOT-QCD Collaboration is pushing forward a series of lattice studies of quantum chromodynamics (QCD) at finite temperatures and densities using improved Wilson quarks. Because Wilson-type quarks require more computational resources than the more widely used staggered-type quarks, various theoretical and computational techniques have to be developed and applied. In this paper, we introduce a fixed-scale approach armed with aT-integration method, a Gaussian method based on cumulant expansion, and a histogram method combined with the reweighting technique. Using these methods, we have carried out the first study of finite-density QCD with Wilson-type quarks and the first calculation of the equation of state with 2+1 flavors of Wilson-type quarks. We present the results of these studies and discuss perspectives towards clarification of the properties of 2+1 flavor QCD at the physical point at finite temperatures and densities.