Black holes and holography

Abstract

The idea of holography in gravity arose from the fact that the entropy of black holes is given by their surface area. The holography encountered in gauge/gravity duality has no such relation however; the boundary surface can be placed at an arbitrary location in AdS space and its area does not give the entropy of the bulk. The essential issues are also different between the two cases: in black holes we get Hawking radiation from the `holographic surface' which leads to the information issue, while in gauge/gravity duality there is no such radiation from the boundary surface. To resolve the information paradox we need to show that there are real degrees of freedom at the horizon of the hole; this is achieved by the fuzzball construction. While the fuzzball has no interior to the horizon, we argue that an auxiliary spacetime can be constructed to continue the collective dynamics of fuzzball for times of order the crossing time; this is an analogue of `complementarity'.

28 pages, 21 figures, Expanded version of proceedings for COSGRAV12, Kolkata, Feb 2012

References in corpus (11)

• Black hole evaporation: A paradigm
• Radiation from the non-extremal fuzzball
• Unitarity and Holography in Gravitational Physics
• Plumbing the Abyss: Black Ring Microstates
• Non-supersymmetric microstates of the D1-D5-KK system
• A class of BPS time-dependent 3-charge microstates from spectral flow
• Pair creation in non-extremal fuzzball geometries
• Bubbles on Manifolds with a U(1) Isometry
• Holographic Thought Experiments
• Spacetime topology change and black hole information
• Black Ring Deconstruction

Cited by in corpus (11)

• Time Dependence of Hawking Radiation Entropy
• Comments on black holes I: The possibility of complementarity
• Unitarity and fuzzball complementarity: "Alice fuzzes but may not even know it!"
• Superdescendants of the D1D5 CFT and their dual 3-charge geometries
• Thermal Decay without Information Loss in Horizonless Microstate Geometries
• Black-Hole Entropy from Supergravity Superstrata States
• Exponential corrected thermodynamics of black holes
• Insane Anti-Membranes?
• Entanglement Entropy and D1-D5 geometries
• Overdamped quasibound states inside a Schwarzschild black hole
• Limitations of holography