论文标题
QCD中t = 128 meV中手性对称性的方面
Aspects of chiral symmetry in QCD at T = 128 MeV
论文作者
论文摘要
我们在$ t = 128 \，\ text {mev} $的温度下研究了QCD中手性对称性的几个方面。该研究基于$ 24 \ times 96^3 $ lattice-qcd合奏，其中有O（$ a $） - 改进的Wilson Quarks和Physical Up，Down，Down and Whtext Quark Masses。事实证明，即使相应的静态相关长度较短，也比零温度的锥质质量明显轻得多。我们将发现结果与手性扰动理论的预测进行定量比较。在手性对称性恢复的几个阶参数中，我们计算了矢量和轴向矢量时间依赖性相关器的差异，并发现与真空对应物相比，该因子$ \ sim2/3 $将其降低。
We investigate several aspects of chiral symmetry in QCD at a temperature of $T = 128\,\text{MeV}$. The study is based on a $24\times 96^3$ lattice-QCD ensemble with O($a$)-improved Wilson quarks and physical up, down and strange quark masses. The pion quasiparticle turns out to be significantly lighter than the zero-temperature pion mass, even though the corresponding static correlation length is shorter. We perform a quantitative comparison of our findings to predictions of chiral perturbation theory. Among several order parameters for chiral symmetry restoration, we compute the difference of the vector- and axial-vector time-dependent correlators and find it to be reduced by a factor $\sim2/3$ as compared to its vacuum counterpart.
