Scaling of Pseudo-Critical Couplings in Two-Flavour QCD

Abstract

We study the scaling behaviour of the pseudo-critical couplings for the chiral phase transition in two-flavour QCD. We show that all existing results from lattice simulations on lattices with temporal extent $N_{\tau }=4$, 6 and 8 can be mapped onto a universal scaling curve. The relevant combination of critical exponents, $\beta \delta$, is consistent with the scaling behaviour expected for a second order phase transition with $O(4)$ exponents. At present, scaling according to the $O(2)$ symmetry group can, however, not be ruled out.

8 pages, NSF-ITP 93-121

References in corpus (2)

• Static and Dynamic Critical Phenomena at a Second Order QCD Phase Transition
• Scaling and Asymptotic Scaling in the SU(2) Gauge Theory

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