Generalized entropy and higher derivative gravity
Generalized entropy and higher derivative gravity
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DOI：
10.1007/jhep03(2014)070
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发表时间：
2013-10
影响因子：
5.4
通讯作者：
J. Camps
中科院分区：
文献类型：
--
作者：
J. Camps
我们推导出一个扩展的Ryu-Takayanagi处方曲率平方理论的重力在散装，并评论处方更一般的理论。这导致一个新的纠缠泛函，其中包含一个校正沃尔德的熵。新项是外曲率的二次项。这个修正的系数是拉格朗日量相对于黎曼张量的二阶导数。对于Gauss-Bonnet引力，新泛函退化为Jacobson-Myers泛函。
We derive an extension of the Ryu-Takayanagi prescription for curvature squared theories of gravity in the bulk, and comment on a prescription for more general theories. This results in a new entangling functional, that contains a correction to Wald’s entropy. The new term is quadratic in the extrinsic curvature. The coefficient of this correction is a second derivative of the lagrangian with respect to the Riemann tensor. For Gauss-Bonnet gravity, the new functional reduces to Jacobson-Myers’.