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arXiv:2311.17023 · Journal of High Energy Physics

Reflected entropy in a BCFT on a black hole background

Debarshi Basu, Himanshu Chourasiya, Vinayak Raj, Gautam Sengupta

Published May 6, 2024• 14 citations
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Abstract

A bstract We obtain the reflected entropy for bipartite mixed state configurations involving two disjoint and adjacent subsystems in a two dimensional boundary conformal field theory (BCFT 2 ) in a black hole background. The bulk dual is described by an AdS 3 black string geometry truncated by a Karch-Randall brane. The entanglement wedge cross section computed for this geometry matches with the reflected entropy obtained for the BCFT 2 verifying the holographic duality. In this context, we also obtain the analogues of the Page curves for the reflected entropy and investigate the behaviour of the Markov gap.

DOI
10.1007/jhep05(2024)054

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