AdS/CFT改进的流体动力学
Improved Hydrodynamics from the AdS/CFT
摘要：
我们广义（线性化）相对论流体动力学包括所有阶梯度展开的能量动量张量，参数化的四个动量依赖的传输系数，其中之一是通常的剪切粘度。然后，我们应用AdS/CFT对偶${\cal N}=4$超对称性，以计算的能量动量张量的延迟的扩张。从这些dispersionators，我们确定了一个大的第三和第四阶流体动力学的传输系数。我们发现高阶项有降低粘性效应的趋势。
英文摘要：
We generalize (linearized) relativistic hydrodynamics by including all order gradient expansion of the energy momentum tensor, parametrized by four momenta-dependend transport coefficients, one of which is the usual shear viscosity. We then apply the AdS/CFT duality for ${\cal N}=4$ SUSY in order to compute the retarded correlators of the energy-momentum tensor. From these correlators we determine a large set of transport coefficients of third- and fourth-order hydrodynamics. We find that higher order terms have a tendency to reduce the effect of viscosity.
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