论文标题

QCD手性转变的晶格模拟,$μ_b$

Lattice simulations of the QCD chiral transition at real $μ_B$

论文作者

Pasztor, Attila, Borsanyi, Szabolcs, Fodor, Zoltan, Giordano, Matteo, Katz, Sandor D., Nogradi, Daniel, Wong, Chik Him

论文摘要

大多数关于热和密集QCD物质的晶格研究都依赖于从零或假想化学势中推断出来的。数值分析延续的不良性对此类方法的可靠性造成了严重的限制。我们以有限的真实重子密度研究了QCD手性转变,并使用更直接的符号重新加权方法。我们最多模拟了$ __b/t = 2.7 $的Barychemical电位 - 温度比率,覆盖了Rhic Beam Energy扫描范围,并穿透了基于分析延伸的方法的区域,该区域是无预测的。这打开了一个新的窗口,可以从FIRST ARINCALLES中研究QCD Matter。

Most lattice studies of hot and dense QCD matter rely on extrapolation from zero or imaginary chemical potentials. The ill-posedness of numerical analytic continuation puts severe limitations on the reliability of such methods. We studied the QCD chiral transition at finite real baryon density with the more direct sign reweighting approach. We simulate up to a baryochemical potential-temperature ratio of $μ_B/T=2.7$, covering the RHIC Beam Energy Scan range, and penetrating the region where methods based on analytic continuation are unpredictive.This opens up a new window to study QCD matter at finite $μ_B$ from first principles.

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