Susceptibilities, the Specific Heat and a Cumulant in Two-Flavour QCD

Abstract

We study the quark mass dependence of various response functions, which contribute to chiral susceptibilities and the specific heat in the staggered fermion formulation of two-flavour QCD. This yields information about the critical exponents $\alpha$, $\beta$ and $\delta$. In the case of the chiral susceptibility, obtained as derivative of the chiral order parameter with respect to the quark mass, we calculate all contributions. This allows to construct a cumulant of the order parameter, which is a scaling function and yields a direct determination of the critical exponent $\delta$. All our results are consistent with a second order phase transition.

16 pages (TeX file) + 7 figures (appended as ps-files), uuencoded, Bielefeld preprint, BI-TP 94/29, June 1994

References in corpus (3)

• Scaling of Pseudo-Critical Couplings in Two-Flavour QCD
• New Results and Long-standing Questions in Finite Temperature QCD
• The Proximal Chiral Phase Transition

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