https://doi.org/10.1051/epjconf/201817507024
Topological Susceptibility in Nf = 2 QCD at Finite Temperature
1
Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
2
High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 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, Osaka 560-0043, Japan
6
SOKENDAI (The Graduate University for Advanced Studies), Tsukuba, Ibaraki 305-0801, Japan
* Speaker, e-mail: yasumichi.aoki@kek.jp
Published online: 26 March 2018
We study the topological charge in Nf = 2 QCD at finite temperature using Möbius domain-wall fermions. The susceptibility Xt of the topological charge defined either by the index of overlap Dirac operator or a gluonic operator is investigated at several values of temperature T (> Tc) varying the quark mass. A strong suppression of the susceptibility is observed below a certain value of the quark mass. The relation with the restoration of UA(1) is discussed.
© The Authors, published by EDP Sciences, 2018
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