Jul 18 – 23, 2022
University of Vienna
Europe/Vienna timezone

Islands with Gravitating Baths in Double Holography

Not scheduled
Audimax (University of Vienna)


University of Vienna

Universitätsring 1, 1010 Vienna, Austria


Sanjit Shashi


We study black hole information and entanglement islands in higher dimensions (d > 2) using the bottom-up Karch-Randall-Sundrum braneworld construction. Earlier work in the double-holography literature embeds a single Randall-Sundrum brane in (d+1)-dimensional AdS gravity and uses the Karch-Randall mechanism to realize a theory of a gravitating braneworld coupled at infinity to a nongravitating conformal bath. We make the bath gravitating by introducing a second brane and having it act as the bath. Unlike in previous studies of black holes in doubly holographic brane/bath systems, we find no dynamics in the entanglement entropy of Hawking radiation, although we do get islands. This is evidence that the information paradox may be resolved at the semiclassical level by a constant entropy curve, in agreement with the principle of holography of information.

Primary author


Andreas Karch (University of Texas at Austin) Hao Geng (Harvard University, University of Washington) Carlos Perez-Pardavila (University of Texas at Austin) Suvrat Raju (Tata Institute of Fundamental Research) Lisa Randall (Harvard University) Marcos Riojas (University of Texas at Austin)

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