标题： 高阶导数全息和QGP粘度的温度依赖性 显示英文标题

标题： Higher derivative holography and temperature dependence of QGP viscosities

摘要： 近期对重离子碰撞数据的贝叶斯分析已经确定了剪切黏度和体积黏度与熵之比具有非平凡的温度依赖性。 受此启发，我们考虑了五维爱因斯坦-标量理论所基于的实际自下而上的夸克胶子等离子体的高阶导数修正的全息模型，并通过匹配贝叶斯分析来确定高阶导数项中的标量势。 我们的分析的一个副产品是从全息V-QCD理论得出的体积黏度。 当高阶导数修正以微扰论处理时，与现有数据存在矛盾。我们研究可能的解决方案。 显示英文摘要

摘要： Recent Bayesian analyses of heavy ion collision data have established a non-trivial temperature dependence of the shear and bulk viscosity per entropy. Motivated by this, we consider higher derivative corrections to realistic, bottom-up holographic models of quark-gluon plasma based on five-dimensional Einstein-dilaton theories and determine the dilaton potentials in the higher derivative terms by matching the Bayesian analyses. A byproduct of our analysis is the bulk viscosity that follows from the holographic V-QCD theory. Higher derivative corrections when treated perturbatively lead to tension with existing data. We investigate possible resolutions.