A comment on a fine-grained description of evaporating black holes with baby universes
arXiv:2111.07107 · doi:10.1007/JHEP09(2022)158
Abstract
We study a partially fine-grained description of an evaporating black hole by introducing an open baby universe with a boundary. Since the Page's calculation of the entropy of Hawking radiation involves an ensemble average over a class of states, one can formally obtain a fine-grained state by purifying this setup. For AdS black holes with a holographic dual, this purification amounts to introducing an additional boundary (i.e., baby universe) and then connecting it to the original black hole through an Einstein-Rosen bridge. We uncover several details of this setup. As applications, we briefly discuss how this baby universe modifies the semi-classical gravitational Gauss law as well as the gravitational dressing of operators behind the horizon.
27 Pages, 5 figures; v2: typos corrected, references added
References in corpus (64)
- Information Transfer with a Gravitating Bath
- JT gravity as a matrix integral
- Inconsistency of Islands in Theories with Long-Range Gravity
- Islands in cosmology
- Page Curve for an Evaporating Black Hole
- Observables, gravitational dressing, and obstructions to locality and subsystems
- Islands in Asymptotically Flat 2D Gravity
- Gravity/Ensemble Duality
- Islands in de Sitter space
- Holographic BCFTs and Communicating Black Holes
- Notes on islands in asymptotically flat 2d dilaton black holes
- Entanglement entropy in holographic moving mirror and Page curve
- Quantum Extremal Islands Made Easy, PartIII: Complexity on the Brane
- Observations of Hawking radiation: the Page curve and baby universes
- Island in Charged Black Holes
- Islands and Page curves in 4d from Type IIB
- A violation of global symmetries from replica wormholes and the fate of black hole remnants
- Islands and complexity of eternal black hole and radiation subsystems for a doubly holographic model
- Islands and Page curves of Reissner-Nordström black holes
- Replica wormholes for an evaporating 2D black hole
- Global symmetry, Euclidean gravity, and the black hole information problem
- Dirichlet Baths and the Not-so-Fine-Grained Page Curve
- Islands in charged linear dilaton black holes
- Quantum Information in Holographic Duality
- Islands and stretched horizon
- Entanglement between two disjoint universes
- Effective entropy of quantum fields coupled with gravity
- The Price of Curiosity: Information Recovery in de Sitter Space
- Probing Hawking radiation through capacity of entanglement
- Replica wormholes and capacity of entanglement
- Entanglement entropy of asymptotically flat non-extremal and extremal black holes with an island
- Defect extremal surface as the holographic counterpart of Island formula
- Islands in Linear Dilaton Black Holes
- Signatures of global symmetry violation in relative entropies and replica wormholes
- Page curves for a family of exactly solvable evaporating black holes
- Holography from the Wheeler-DeWitt equation
- Information Recovery From Black Holes
- Islands in Kaluza-Klein black holes
- Island for Gravitationally Prepared State and Pseudo Entanglement Wedge
- Disorder Averaging and its UV (Dis)Contents
- Topological shadows and complexity of islands in multiboundary wormholes
- Relative Entropy of Random States and Black Holes
- Ensemble from Coarse Graining: Reconstructing the Interior of an Evaporating Black Hole
- Hawking Radiation Correlations of Evaporating Black Holes in JT Gravity
- Submerging islands through thermalization
- Islands for Entanglement Negativity
- Distinguishing Random and Black Hole Microstates
- Islands with Gravitating Baths: Towards ER = EPR
- Islands and mixed states in closed universes
- Black Hole Interior in Unitary Gauge Construction
- The Multiverse in an Inverted Island
- The Entanglement Wedge of Unknown Couplings
- Holevo Information and Ensemble Theory of Gravity
- Entanglement between two gravitating universes
- Entanglement island, miracle operators and the firewall
- Statistical coupling constants from hidden sector entanglement
- Evaporation of black holes in flat space entangled with an auxiliary universe
- Entanglement entropy and vacuum states in Schwarzschild geometry
- Holographic baby universes: an observable story
- The black hole information puzzle and the quantum de Finetti theorem
- Wormholes and holographic decoherence
- Page Curve from Defect Extremal Surface and Island in Higher Dimensions
- Holographic moving mirrors
- Product of Random States and Spatial (Half-)Wormholes
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- Entanglement Phase Structure of a Holographic BCFT in a Black Hole Background
- BCFT in a Black Hole Background: An Analytical Holographic Model
- Entanglement Islands in Generalized Two-dimensional Dilaton Black Holes
- Page curve and symmetries
- Entropy of Radiation with Dynamical Gravity
- Effect of backreaction on Island, Page curve and Mutual Information