Parameter dependence of the mapping of the mean-field Ising model onto QCD in the first-order phase transition regime
Year: 2026
Type: preprint
Abstract: We map the mean-field Ising equation of state onto the QCD phase diagram and investigate how scaling parameters alter the metastable and unstable regions, as well as the symmetrized pressure and density along an isotherm on the QCD $T-μ_B$ phase plane. We find that, for both the conventional mapping scheme and the scheme valid in the small-quark-mass limit, increasing the scaling parameters $w$ and $ρ$ narrows the metastable and unstable regions. In the small-quark-mass-limit scheme, larger $w$ and $ρ$ reduce both the Ising-symmetrized pressure and density. For the conventional scheme, increasing $w$ reduces these quantities, while increasing $ρ$ raises the Ising-symmetrized pressure and has only a small effect on the density.
Source: arXiv (Cornell University)
Authors: Pan, Xue, Li, Yuepeng
Institution: Chengdu University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7223126787