Tuesday, July 23, 2013

1307.5325 (Han-Chih Chang et al.)

Entanglement Entropy for Probe Branes    [PDF]

Han-Chih Chang, Andreas Karch
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.
View original: http://arxiv.org/abs/1307.5325

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