论文标题
QGP的重力敏感性
Gravitational susceptibility of QGP
论文作者
论文摘要
我们使用$ {\ cal n} = 2^*$和级联理论全息模型来提取强烈耦合的非结构性夸克 - 蛋白等离子体的重力敏感性$κ$的一般特征。我们表明，在具有相关耦合常数的理论中，重力敏感性取决于重新归一化方案。我们建议将其温度导数，即$ \ frac {dκ} {d \ ln t} $作为QGP的方案独立特征。尽管$κ$是热力学数量，但其临界行为在看似相同的热相变的附近可能会大有不同。
We use ${\cal N}=2^*$ and cascading gauge theory holographic models to extract the general features of the gravitational susceptibility $κ$ of strongly coupled nonconformal quark-gluon plasma. We show that in theories with a relevant coupling constant the gravitational susceptibility is renormalization scheme dependent. We propose to use its temperature derivative, i.e., $\frac{dκ}{d\ln T}$, as a scheme-independent characteristic of a QGP. Although $κ$ is a thermodynamic quantity, its critical behavior can be drastically distinct in the vicinity of seemingly identical thermal phase transitions.
