Holographic c-theorems and higher derivative gravity

Details Holographic c-theorems and higher derivative gravity Holographic c-theorems and higher derivative gravity

2010-12-15

arxiv.org/abs/1012.3382v2

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, revtex, references added

Scientific paper

In AdS/CFT, the holographic Weyl anomaly computation relates the a-anomaly coefficient to the properties of the bulk action at the UV fixed point. This universal behavior suggests the possibility of a holographic c-theorem for the a-anomaly under flows to the IR. We prove such a c-theorem for higher curvature Lovelock gravity, where the bulk equations of motion remain second order. We also explore f(R) gravity as a toy model where higher derivatives cannot be avoided. In this case, monoticity of the flow requires an additional condition related to the higher derivative nature of the theory. This is in contrast to the case of f(R) black hole entropy, where the second law follows from application of the full Einstein equations and the null energy condition.

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