论文标题

热和密集的夸克gluon等离子体的状态:晶格模拟以$μ_b$ vs.外推

Equation of state of a hot-and-dense quark gluon plasma: lattice simulations at real $μ_B$ vs. extrapolations

论文作者

Borsanyi, Szabolcs, Fodor, Zoltan, Giordano, Matteo, Guenther, Jana N., Katz, Sandor D., Pasztor, Attila, Wong, Chik Him

论文摘要

Quark Gluon等离子体状态的方程是重离子现象学的关键要素。除了传统的泰勒方法外,还提出了几种新型近似方案,目的是在有限的巴里昂密度下对其进行计算。为了对这些方案的限制有务实的了解,我们将它们与$μ_b> 0 $指导的结果进行比较,并使用重新加工技术从重叠问题中免费进行了。我们使用8个时间分段的2stout改进的交错费用,并覆盖整个rhic bes范围,以bary型潜力,最高$μ_b/t = 3 $。

The equation of state of the quark gluon plasma is a key ingredient of heavy ion phenomenology. In addition to the traditional Taylor method, several novel approximation schemes have been proposed with the aim of calculating it at finite baryon density. In order to gain a pragmatic understanding of the limits of these schemes, we compare them to direct results at $μ_B>0$, using reweighting techniques free from an overlap problem. We use 2stout improved staggered fermions with 8 time-slices and cover the entire RHIC BES range in the baryochemical potential, up to $μ_B/T=3$.

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