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arXiv 2206.04579hep-phhep-latnucl-th
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强子共振气体模型的手征凝聚

Chiral condensate from a hadron resonance gas model

Deeptak Biswas, Peter Petreczky, Sayantan Sharma

摘要:

在这项工作中,我们解决的问题,以及如何手征交叉过渡可以理解的非相互作用的强子共振气体模型。利用晶格量子色动力学中强子质量随π介子质量变化的最新结果,研究了2+1味QCD中重整化手征凝聚体的温度依赖性.此外,我们提出了一个更好的标准来估计的赝临界温度,这给$T_c = 161.2 \pm 1.7$ MeV,这是大大改善了所有的早期结果内的强子共振气体模型或手征微扰理论。对于赝临界线的曲率,我们发现$κ_2 = 0.0203(7)$,这是在非常好的协议与连续外推晶格的结果。

英文摘要:

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 $κ_2 = 0.0203(7)$, which is in very good agreement with continuum extrapolated lattice results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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