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Chiral condensate from a hadron resonance gas model

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arxiv 2206.04579 v2 pith:2MWOYBPJ submitted 2022-06-09 hep-ph hep-latnucl-th

Deeptak Biswas , Peter Petreczky , Sayantan Sharma This is my paper · ORCID
classification hep-phhep-latnucl-th
keywords chiralhadronmodelresonanceresultscondensatelatticepseudocritical
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

In this work we address the question of how well the chiral crossover transition can be understood in terms of a noninteracting hadron resonance gas model. Using the latest results on the variation of hadron masses as a function of the pion mass from lattice quantum chromodynamics, we study the temperature dependence of the renormalized chiral condensate in 2+1 flavor QCD. Furthermore, we suggest a better criterion to estimate of the pseudocritical temperature, which gives $T_c = 161.2 \pm 1.7$ MeV, which is much improved compared to all the earlier results within the hadron resonance gas model or chiral perturbation theory. For the curvature of the pseudocritical line we find $\kappa_2 = 0.0203(7)$, which is in very good agreement with continuum extrapolated lattice results.

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    hep-ph 2025-05 conditional novelty 6.0 of 10

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