In different approaches, the temperature-baryon density plane of QCD matter is studied for deconfinement and chemical freezeout boundaries. Results from various heavy-ion experiments are compared with the recent lattice simulations, the effective QCD-like Polyakov linear-sigma model, and the equilibrium thermal models. Along the entire freezeout boundary, there is an excellent agreement between the thermal model calculations and the experiments. Also, the thermal model calculations agree well with the estimations deduced from the Polyakov linear-sigma model (PLSM). At low baryonic density or high energies, both deconfinement and chemical freezeout boundaries are likely coincident, and therefore, the agreement with the lattice simulations becomes excellent as well, while at large baryonic density, the two boundaries become distinguishable forming a phase where hadrons and quark-gluon plasma likely coexist.

中文翻译：

---

平衡热模型中的反约束和冻结边界

在不同的方法中，研究了QCD物质的温度重子密度平面以了解约束和化学冻结边界。将来自各种重离子实验的结果与最新的晶格模拟，有效的QCD型Polyakov线性-sigma模型以及平衡热模型进行了比较。在整个冻结边界上，热模型计算与实验之间有着极好的一致性。而且，热模型计算与从Polyakov线性西格玛模型（PLSM）推导出的估计非常吻合。在低重子密度或高能量下，脱限和化学冻结边界可能是重合的，因此，与重晶格模拟的一致性也变得极好，而在大重子密度下，