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arXiv · 1710.08287

Degeneracy of vector-channel spatial correlators in high temperature QCD

Christian Rohrhofer·Yasumichi Aoki·Guido Cossu·Hidenori Fukaya·Leonid Glozman·Shoji Hashimoto·Christian B. Lang·Sasa Prelovsek
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Abstract

We study spatial isovector meson correlators in $N_f=2$ QCD with dynamical domain-wall fermions on $32^3\times 8$ 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 $T_c$ we observe an approximate degeneracy of the correlators in these channels, which is unexpected because some of them are not related under $SU(2)_L \times SU(2)_R$ nor $U(1)_A$ symmetries. The observed approximate degeneracy suggests emergent $SU(2)_{CS}$ (chiral-spin) and $SU(4)$ symmetries at high $T$.

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Christian Rohrhofer, Yasumichi Aoki, Guido Cossu, Hidenori Fukaya, Leonid Glozman, Shoji Hashimoto, Christian B. Lang, Sasa Prelovsek. 2017-10-20. Degeneracy of vector-channel spatial correlators in high temperature QCD. https://doi.org/10.1051/epjconf%2F201817507029

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