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Holographic Entanglement Entropy for Excited States in Two Dimensional CFT

We use holographic methods to study the entanglement entropy for excited states in a two dimensional conformal field theory. The entangling area is a single interval and the excitations are produced by in and out vertex operators with given scaling dimensions. On the gravity side we provide the excitations by turning on a scalar field with an appropriate mass. The calculation amounts to using the gravitational background, with a singular boundary, to find the one point function of the vertex operators. The singular boundary is taken care of by introducing a nontrivial UV regulator surface to calculate gravitational partition functions. By means of holographic methods we reproduce the field theory results for primary excitations.

preprint2013arXivOpen access
Amin Faraji AstanehAmir Esmaeil Mosaffa
hep-th
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Amin Faraji AstanehAmir Esmaeil Mosaffa

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