论文标题
Quark-Meson模型中的热化和动力光谱特性
Thermalization and dynamical spectral properties in the quark-meson model
论文作者
论文摘要
我们使用两粒子不可还原有效的动作技术研究了夸克 - 梅森模型的非平衡演化。我们的数值模拟包括手性对称性的顺序参数的完整动力学，显示了该模型如何将其热层化为其相图的不同区域。特别是，通过研究夸克和介子光谱函数，我们阐明了接近交叉过渡的实时动力学，例如红外线自由度有效的效率费用程度的出现。在演变的后期，波动散落关系在介子和夸克自由度之间自然出现，证实了模拟成功达到热平衡。
We investigate the nonequilibrium evolution of the quark-meson model using two-particle irreducible effective action techniques. Our numerical simulations, which include the full dynamics of the order parameter of chiral symmetry, show how the model thermalizes into different regions of its phase diagram. In particular, by studying quark and meson spectral functions, we shed light on the real-time dynamics approaching the crossover transition, revealing e.g. the emergence of light effective fermionic degrees of freedom in the infrared. At late times in the evolution, the fluctuation-dissipation relation emerges naturally among both meson and quark degrees of freedom, confirming that the simulation successfully reaches thermal equilibrium.
