QCD手征相变及其普适临界行为的参数无关分析
A parameter independent analysis of the QCD chiral phase transition and its universal critical behaviour
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中文总结 AI 辅助
本文利用标度函数性质，从(2+1)味QCD模拟中直接估计手征相变温度及普适临界参数，并分析有限体积效应和夸克质量比导致的标度行为偏差。
中文摘要 AI 辅助
我们利用标度函数的独特性质，直接从具有高度改进交错费米子的(2+1)味QCD模拟中，在时间范围$N_\ au=8$的格点上，估计手征相变温度及该相变的相应普适临界参数。通过使用改进的手征序参数量化手征对称性破缺，我们分析了该可观测量在广泛格点体积和轻夸克质量下的有限体积依赖性，并定量估计了作为轻夸克与奇异夸克质量比函数的偏离预期普适标度行为的偏差。
英文摘要
We make use of unique properties of scaling functions to estimate the chiral phase transition temperature and corresponding universal critical parameters of this phase transition directly from (2+1)-flavor QCD simulations with highly improved staggered fermions on lattices with temporal extent $N_τ=8$. Working with an improved chiral order parameter for quantifying chiral symmetry breaking, we analyze the finite-volume dependence of this observable for a wide range of lattice volumes and light quark masses, and quantitatively estimate the deviations from the expected universal scaling behaviour as a function of the light-to-strange quark mass ratio.
