Abstract
Variants of the black hole information paradox are studied in Type IIB string theory setups that realize four-dimensional gravity coupled to a bath. The setups are string theory versions of doubly-holographic Karch/Randall brane worlds, with black holes coupled to non-gravitating and gravitating baths. The 10d versions are based on fully backreacted solutions for configurations of D3, D5 and NS5 branes, and admit dual descriptions as \( \mathcal{N} \) = 4 SYM on a half space and 3d \( {T}_{\rho}^{\sigma } \) [SU(N)] SCFTs. Island contributions to the entanglement entropy of black hole radiation systems are identified through Ryu/Takayanagi surfaces and lead to Page curves. Analogs of the critical angles found in the Karch/Randall models are identified in 10d, as critical parameters in the brane configurations and dual field theories.
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Uhlemann, C.F. Islands and Page curves in 4d from Type IIB. J. High Energ. Phys. 2021, 104 (2021). https://doi.org/10.1007/JHEP08(2021)104
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DOI: https://doi.org/10.1007/JHEP08(2021)104