Degeneracy of vector-channel spatial correlators in high temperature QCD
Institute of Physics, University of Graz, 8010 Graz, Austria
2 KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
3 RIKEN BNL Research Center, Brookhaven National Laboratory, Upton NY 11973, USA
4 School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom
5 Department of Physics, Osaka University, Toyonaka 560-0043, Japan
6 School of High Energy Accelerator Science, The Graduate University for Advanced Studies (Sokendai), Tsukuba 305-0801, Japan
7 Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
8 Jozef Stefan Institute, 1000 Ljubljana, Slovenia
9 Institute für Theoretische Physik, Universität Regensburg, D-93040, Germany
* Speaker, e-mail: email@example.com
Published online: 26 March 2018
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.
© The Authors, published by EDP Sciences, 2018
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