Holographic Calculations of Renyi Entropy

Details Holographic Calculations of Renyi Entropy Holographic Calculations of Renyi Entropy

2011-10-05

arxiv.org/abs/1110.1084v1

Physics

High Energy Physics

High Energy Physics - Theory

71 pages, 6 figures

Scientific paper

We extend the approach of Casini, Huerta and Myers to a new calculation of the Renyi entropy of a general CFT in d dimensions with a spherical entangling surface, in terms of certain thermal partition functions. We apply this approach to calculate the Renyi entropy in various holographic models. Our results indicate that in general, the Renyi entropy will be a complicated nonlinear function of the central charges and other parameters which characterize the CFT. We also exhibit the relation between this new thermal calculation and a conventional calculation of the Renyi entropy where a twist operator is inserted on the spherical entangling surface. The latter insight also allows us to calculate the scaling dimension of the twist operators in the holographic models.

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