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arXiv · 1512.07902

Holographic entanglement entropy for massive flavours in dS_4

Vladislav Vaganov
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Abstract

We examine the holographic entanglement entropy of spherical regions in de Sitter space in the presence of massive flavour fields which are modelled by probe D7 branes in AdS_5xS^5. We focus on the finite part of the massive correction to the entropy in the limits of small mass and large mass that are separated by a phase transition between two topologically distinct brane embeddings. For small masses, it approaches the flat space result for small spheres, whereas for large spheres there is a term that goes as the log of the sphere radius. For large masses, we find evidence for a universal contribution logarithmic in the mass. In all cases the entanglement entropy is smooth as the sphere radius crosses the horizon.

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Vladislav Vaganov. 2016-04-06. Holographic entanglement entropy for massive flavours in dS_4. https://doi.org/10.1007/jhep03(2016)172

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