arXiv:hep-lat/9809102·v2·High Energy Physics — Lattice

Phase structure of lattice QCD at finite temperature for 2+1 flavors of Kogut-Susskind quarks

JLQCD Collaboration: S. Aoki🇯🇵 · M. Fukugita🇯🇵 · S. Hashimoto🇯🇵 · K-I. Ishikawa🇯🇵 · N. Ishizuka🇯🇵 · Y. Iwasaki🇯🇵 · K. Kanaya🇯🇵 · T. Kaneda🇯🇵 · S. Kaya🇯🇵 · Y. Kuramashi🇯🇵 · M. Okawa🇯🇵 · T. Onogi🇯🇵

PDF arXiv INSPIRE DOI

Abstract

We report on a study of the finite-temperature chiral transition on an $N_{t} = 4$ lattice for 2+1 flavors of Kogut-Susskind quarks. We find the point of physical quark masses to lie in the region of crossover, in agreement with results of previous studies. Results of a detailed examination of the $m_{u, d} = m_{s}$ case indicate vanishing of the screening mass of $σ$ meson at the end point of the first-order transition.