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arXiv 1105.4482hep-thgr-qc
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高曲率引力与对偶于平坦时空的全息流体

Higher Curvature Gravity and the Holographic fluid dual to flat spacetime

Goffredo Chirco, Christopher Eling, Stefano Liberati

摘要:

最近的工作表明,人们可以构造一个真空爱因斯坦方程的(d+2)维解,它与满足不可压缩纳维-斯托克斯方程的(d+1)维流体对偶。在一个重要的例子中,流体存在于与加速观察者相关的平坦林德勒时空中的固定类时面上。在本文中,我们证明了流体的剪切粘度与熵密度之比取普遍值1/4π,在一个广泛的类高曲率推广爱因斯坦引力。与渐近反德西特时空的流体对偶不同,这里引力动力学的选择只影响二阶输运系数。我们明确地计算这些在五维爱因斯坦-高斯-邦纳引力和讨论我们的结果的影响。

英文摘要:

Recent works have demonstrated that one can construct a (d+2) dimensional solution of the vacuum Einstein equations that is dual to a (d+1) dimensional fluid satisfying the incompressible Navier-Stokes equations. In one important example, the fluid lives on a fixed timelike surface in the flat Rindler spacetime associated with an accelerated observer. In this paper, we show that the shear viscosity to entropy density ratio of the fluid takes the universal value 1/4πin a wide class of higher curvature generalizations to Einstein gravity. Unlike the fluid dual to asymptotically anti-de Sitter spacetimes, here the choice of gravitational dynamics only affects the second order transport coefficients. We explicitly calculate these in five-dimensional Einstein-Gauss-Bonnet gravity and discuss the implications of our results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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