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arXiv · hep-lat/9406008

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

Frithjof Karsch·Edwin Laermann
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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 $α$, $β$ and $δ$. 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 $δ$. All our results are consistent with a second order phase transition.

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Frithjof Karsch, Edwin Laermann. 1994-06-13. Susceptibilities, the Specific Heat and a Cumulant in Two-Flavour QCD. https://doi.org/10.1103/physrevd.50.6954

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