Preprint Numbers: ANL-PHY-8897-TH-98 MPG-VT-UR 124/98 Analysis of chiral and thermal susceptibilities
نویسندگان
چکیده
We calculate the chiral and thermal susceptibilities for two confining DysonSchwinger equation models of QCD with two light flavours, a quantitative analysis of which yields the critical exponents, β and δ, that characterise the second-order chiral symmetry restoration transition. The method itself is of interest, minimising the influence of numerical noise in the calculation of the order parameter for chiral symmetry breaking near the critical temperature. For the more realistic of the two models we find: Tc ≈ 153 MeV, and the nonmean-field values: β = 0.46 ± 0.04, δ = 4.3 ± 0.3 and 1/(βδ) = 0.54 ± 0.05, which we discuss in comparison with the results of other models. Typeset using REVTEX
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