五维引力-膨胀-快子解的热力学
The Thermodynamics of a 5D Gravity-Dilaton-Tachyon Solution
摘要：
我们提出了一个具有软壁几何的有限温度全息模型，它包含了两个标量场，胶子和手征算符的对偶。一个系列的解决方案是作为动态的，黑洞解爱因斯坦方程。我们利用该解计算了相应的四维规范理论的热性质。胶子和手征热凝聚贡献了影响声速和4D热介质熵的领先阶项。在$T_c\sim 900$ MeV的温度下，我们发现了一个比格点量子色动力学计算高得多的相变。然而，转变只存在于非零热凝聚。
英文摘要：
We propose a finite-temperature holographic model with a soft-wall geometry that incorporates two scalar fields, dual to the gluon and chiral operators. A series solution is presented as the dynamical, black-hole solution to Einstein's equations. We use the solution to calculate the thermal properties of the corresponding 4D gauge theory. Gluon and chiral thermal condensates contribute leading-order terms that affect the speed of sound through and entropy of the 4D thermal medium. At a temperature $T_c\sim 900$ MeV, we find a phase transition, which is much higher than lattice QCD calculations. However, the transition only exists with nonzero thermal condensates.
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