Heller Michal P, Surówka Piotr, Loganayagam R, Spaliński Michał, Vázquez Samuel E
Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Cracow, Poland.
Phys Rev Lett. 2009 Jan 30;102(4):041601. doi: 10.1103/PhysRevLett.102.041601.
Prior attempts to construct the gravity dual of boost-invariant flow of N=4 supersymmetric Yang-Mills gauge theory plasma suffered from apparent curvature singularities in the late-time expansion. This Letter shows how these problems can be resolved by a different choice of expansion parameter. The calculations presented correctly reproduce the plasma energy-momentum tensor within the framework of second-order viscous hydrodynamics.
此前构建N = 4超对称杨-米尔斯规范理论等离子体的 boost 不变流的引力对偶的尝试，在晚期展开中存在明显的曲率奇点问题。本信函展示了如何通过选择不同的展开参数来解决这些问题。所给出的计算在二阶粘性流体动力学框架内正确地重现了等离子体的能量-动量张量。
