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We study the properties of the holographic CFT dual to Gauss-Bonnet gravity in general D(≥ 5) dimensions. We establish the AdS/CFT dictionary and in particular relate the couplings of the… (More)

A bstractWe extend the approach of [12] to a new calculation of the Rényi entropy of a general CFT in d dimensions with a spherical entangling surface, in terms of certain thermal partition… (More)

We examine holographic entanglement entropy with higher curvature gravity in the bulk. We show that in general Wald’s formula for horizon entropy does not yield the correct entanglement entropy.… (More)

Using the AdS/CFT correspondence, we examine entanglement entropy for a boundary theory deformed by a relevant operator and establish two results. The first is that if there is a contribution which… (More)

A bstractWe study twist operators in higher dimensional CFT’s. In particular, we express their conformal dimension in terms of the energy density for the CFT in a particular thermal ensemble. We… (More)

- Barak Kol, Michael Smolkin
- 2008

We present an improvement to the classical effective theory approach to the non-relativistic or post-Newtonian approximation of general relativity. The 'potential metric field' is decomposed through… (More)

- Barak Kol, Michael Smolkin
- 2008

Matched asymptotic expansion is a useful technique in general relativity and other fields whenever interaction takes place between physics at two different length scales. Here matched asymptotic… (More)

A bstractWe provide a framework for a perturbative evaluation of the reduced density matrix. The method is based on a path integral in the analytically continued spacetime. It suggests an alternative… (More)

- Barak Kol, Michael Smolkin
- 2012

A bstractWe discuss the black hole effective action and define its static subsector. We determine the induced gravito-static polarization constants (electric Love numbers) of static black holes… (More)

A bstractWe continue the study of entanglement entropy for a QFT through a perturbative expansion of the path integral definition of the reduced density matrix. The universal entanglement entropy for… (More)