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arXiv · 1307.5325

Entanglement Entropy for Probe Branes

Han-Chih Chang·Andreas Karch
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Abstract

We give a prescription for calculating the entanglement entropy in holographic probe brane systems by systematically taking the leading order backreaction of the probe brane into account. We find a simple compact double integral formula, which is insensitive to many details of the backreaction, most notably the internal space or the non-metric fields sourced by the probe. We validate our method by comparing to exact results in solvable toy models. We also determine the entanglement entropies for a sphere and a strip in the top-down D3/D7 and D3/D5 system. For the sphere the entanglement entropy has also been obtained by other methods and we find perfect agreement.

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Han-Chih Chang, Andreas Karch. 2013-07-19. Entanglement Entropy for Probe Branes. https://doi.org/10.1007/jhep01(2014)180

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