Some Calculable Contributions to Holographic Entanglement Entropy

Details Some Calculable Contributions to Holographic Entanglement Entropy Some Calculable Contributions to Holographic Entanglement Entropy

2011-05-30

arxiv.org/abs/1105.6055v1

Physics

High Energy Physics

High Energy Physics - Theory

52 pages, no figures

Scientific paper

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 is logarithmic in the UV cut-off, then the coefficient of this term is independent of the state of the boundary theory. In fact, the same is true of all of the coefficients of contributions which diverge as some power of the UV cut-off. Secondly, we show that the relevant deformation introduces new logarithmic contributions to the entanglement entropy. The form of some of these new contributions is similar to that found recently in an investigation of entanglement entropy in a free massive scalar field theory [1].

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