论文标题
统计引导模型附近QCD关键端点附近的关键指数和运输属性
Critical exponents and transport properties near the QCD critical endpoint from the statistical bootstrap model
论文作者
论文摘要
我们介绍了从HADRONIC侧接近QCD临界点时剪切和散装粘度系数的行为的估计，描述了强相互作用的统计引导模型（SBM）中的hadronic物质。如果正确选择了表征HageDorn状态的脱落性的参数，则Boostrap模型在夸克 - 哈德隆过渡温度附近显示了关键行为。我们计算QCD临界点附近相关热力学量的临界指数和幅度，并将它们与Ansatz结合起来，用于剪切和块状粘度系数，以在临界点附近得出这些系数的行为。发现剪切粘度与熵密度比在升高时会降低，并在临界点附近更快地接近Kovtun-Son-Son-Starinets结合1/（4π），而散装粘度系数则很快就会迅速上升。
We present an estimate of the behaviour of the shear and bulk viscosity coefficients when the QCD critical point is approached from the hadronic side, describing hadronic matter within the statistical bootstrap model (SBM) of strong interactions. The boostrap model shows critical behavior near the quark-hadron transition temperature if the parameter characterizing the degeneracy of Hagedorn states is properly chosen. We calculate the critical exponents and amplitudes of relevant thermodynamic quantities near the QCD critical point and combine them with an Ansatz for the shear and bulk viscosity coefficients to derive the behavior of these coefficients near the critical point. The shear viscosity to entropy density ratio is found to decrease when the temperature is increased, and to approach the Kovtun-Son-Starinets bound 1/(4π) faster near the critical point, while the bulk viscosity coefficient is found to rise very rapidly.
