Meson correlation functions at high temperature QCD: SU(2)_CS symmetry vs. free quarks

2018/09/01 by Christian Rohrhofer, Yasumichi Aoki, Rohrhofer, C. +9
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Particle physics theoretical and experimental studies #High-Energy Particle Collisions Research

paper · pdf · doi:10.48550/arxiv.1809.00244

Abstract

We report on the progress of understanding spatial correlation functions in high temperature QCD. We study isovector meson operators in N_f=2 QCD using domain-wall fermions on lattices of N_s=32 and different quark masses. It has previously been found that at ∼ 2T_c these observables are not only chirally symmetric but in addition approximately SU(2)_CS and SU(4) symmetric. In this study we increase the temperature up to 5T_c and can identify convergence towards an asymptotically free scenario at very high temperatures.

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