Critical endline of the finite temperature phase transition for 2+1 flavor QCD away from the SU(3)-flavor symmetric point

Yoshifumi Nakamura; Yoshinobu Kuramashi; Shinji Takeda

doi:10.1051/epjconf/201817507008

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Proceedings

Open Access

EPJ Web of Conferences 175, 07008 (2018)
https://doi.org/10.1051/epjconf/201817507008

Critical endline of the finite temperature phase transition for 2+1 flavor QCD away from the SU(3)-flavor symmetric point

Yoshifumi Nakamura¹^,2^*, Yoshinobu Kuramashi³^,4^,1 and Shinji Takeda⁵^,1

¹ RIKEN Advanced Institute for Computational Science, Kobe, Hyogo 650-0047, Japan
² Graduate School of System Informatics, Department of Computational Sciences, Kobe University, Kobe, Hyogo 657-8501, Japan
³ Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
⁴ Center for Computational Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
⁵ Institute of Physics, Kanazawa University, Kanazawa 920-1192, Japan

^* Speaker, e-mail: nakamura@riken.jp

Published online: 26 March 2018

Abstract

We investigate the critical end line of the finite temperature phase transition of QCD away from the SU(3)-flavor symmetric point at zero chemical potential. We employ the renormalization-group improved Iwasaki gauge action and non-perturbatively O(a)- improved Wilson-clover fermion action. The critical end line is determined by using the intersection point of kurtosis, employing the multi-parameter, multi-ensemble reweighting method at the temporal size N_T = 6 and lattice spacing as low as a ≈0.19 fm.

© The Authors, published by EDP Sciences, 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).