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Prog. Theor. Phys. Supplement No.91 (1987) pp. 136-145

Phase Structure of QCD and Forces between Quark Clusters

Shigemi Ohta

Institute for Nuclear Study, University of Tokyo, Tanashi, Tokyo 188

(Received May 6, 1987)

Abstract:

Langevin simulations of finite temperature quantum chromodynamics with two flavors of Kogut-Susskind quarks on 8³ × 4 lattice are presented. It is emphasized that the chiral phase transition strengthens as the quark mass m_q decreases towards zero, changing from a continuous crossover at m_qa = 0.2 to a first order transition at m_q a = 0.1. The critical coupling at m_q = 0 is estimated to be β_c = 6/g_c² = 5.29 - 5.32, and the physical scale of T_c ≃ (0.19 - 0.24) m_ρ. Deconfining phase transition takes place simultaneously with the chiral transition. Preliminary results for quark-antiquark potential derived from Polyakov line correlations are also presented.

URL : http://ptp.ipap.jp/link?PTPS/91/136/
DOI : 10.1143/PTPS.91.136

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