Degeneracy of vector-channel spatial correlators in high temperature QCD
Degeneracy of vector-channel spatial correlators in high temperature QCD
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高温 QCD 中矢量通道空间相关器的简并性
DOI：
10.1051/epjconf/201817507029
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Prelovsek
中科院分区：
文献类型：
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作者：
C. Rohrhofer;Y. Aoki;G. Cossu;H. Fukaya;L. Glozman;S. Hashimoto;C. Lang;S. Prelovsek
我们在Nf = 2的QCD中研究了323 × 8格点上具有动态畴壁费米子的空间等矢量介子激发子，温度高达380 MeV，夸克质量不同。我们测量了自旋为1的等矢量算符的张量，轴矢量，张量和轴张量的张量。当温度高于Tc时，我们观察到这些通道中的双光子近似简并，这是出乎意料的，因为其中一些在SU（2）L ×SU（2）R或U（1）A对称下不相关。观察到的近似简并表明在高温下出现SU（2）CS（手征自旋）和SU（4）对称性。
We study spatial isovector meson correlators in Nf = 2 QCD with dynamical domain-wall fermions on 323 × 8 lattices at temperatures up to 380 MeV with various quark masses. We measure the correlators of spin-one isovector operators including vector, axial-vector, tensor and axial-tensor. At temperatures above Tc we observe an approximate degeneracy of the correlators in these channels, which is unexpected because some of them are not related under SU(2)L ×SU(2)R nor U(1)A symmetries. The observed approximate degeneracy suggests emergent SU(2)CS (chiral-spin) and SU(4) symmetries at high T .