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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

PIRSA:C09002 - Black Holes and Quantum PhysicsPODCAST Subscribe to podcast

Black Holes and Quantum Physics Workshop will bring together experts on this subject. A relaxed and informal setting will allow for productive exchange of ideas.

Organizer(s): Robert Myers   Jaume Gomis    

Collection URL: http://pirsa.org/C09002

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Ten Theses on Black Hole Entropy
Speaker(s): Rafael Sorkin
Abstract: I present a viewpoint on black hole thermodynamics according to which the entropy: derives from horizon 'degrees of freedom''; is finite because the deep structure of spacetime is discrete; is ``objective'' thanks to the distinguished coarse graining provided by the horizon; and obeys the second law... read more
Date: 23/01/2009 - 9:00 am

LQG Black Holes
Speaker(s): Leonardo Modesto
Abstract: In this talk we introduce loop quantum gravity and we apply the theory to the black hole singularity problem. The Schwarzschild black hole solution inside the event horizon coincides with the Kantowski-Sachs space-time and we can study a simple spherically symmetric mini-superspace model. We show th... read more
Date: 23/01/2009 - 10:30 am

Unitarity and Holography in Gravitational Physics
Speaker(s): Donald Marolf
Abstract: Because the gravitational Hamiltonian is a pure boundary term on-shell, asymptotic gravitational fields store information in a manner not possible in local field theories. Two properties follow from this purely gravitational behavior. The first, 'Boundary Unitarity,' holds under AdS-like boundary co... read more
Date: 23/01/2009 - 11:45 am

Black holes, fundamental destruction of information and conservation laws
Speaker(s): Jonathan Oppenheim
Abstract: Theories which have fundamental information destruction or decoherence are motivated by the black hole information paradox. However they have either violated conservation laws, or are highly non-local. Here, we show that the tension between conservation laws and locality can be circumvented by const... read more
Date: 23/01/2009 - 2:30 pm

Resolving the information paradox: the fuzzball proposal
Speaker(s): Samir Mathur
Abstract: String theory gives a consistent theory of quantum gravity, so we can ask about the nature of black hole microstates in this theory. Studies of extremal and near-extremal microstates indicate that these microstates do not have a traditional horizon, which would have no data about the microstate in i... read more
Date: 23/01/2009 - 4:00 pm

Black Hole Information - What's the Problem?
Abstract: I will classify the options to solve the black hole information loss problem by how radical a departure from semi-classical gravity they require outside the quantum gravitational regime. I will argue that the most plausible and conservative conclusion is that the problem of information loss originat... read more
Date: 24/01/2009 - 9:00 am

Matrix models for the black hole information paradox
Speaker(s): Takuya Okuda
Abstract: I'll discuss some large N quantum mechanical theories that are toy models for eternal black holes in AdS via gauge/gravity duality. They can be used to study the classical limit and quantum corrections in gravity, and their roles in the information paradox. We demonstrate that such large N models ca... read more
Date: 24/01/2009 - 10:30 am

Schwarzschild radius and black hole thermodynamics with alpha' corrections from simulations of SUSY matrix quantum mechanics
Speaker(s): Jun Nishimura
Abstract: We present new results from our Monte Carlo simulation of SUSY matrix quantum mechanics with 16 supercharges at finite temperature. The internal energy can be fitted nicely to the behavior predicted from the dual black hole thermodynamics including the alpha' corrections. The temporal Wilson loop ca... read more
Date: 24/01/2009 - 11:45 am

Black holes as mirrors
Speaker(s): Patrick Hayden
Abstract: I'll discuss information retrieval from evaporating black holes, assuming that the internal dynamics of a black hole is unitary and rapidly mixing, and assuming that the retriever has unlimited control over the emitted Hawking radiation. If the evaporation of the black hole has already proceeded pas... read more
Date: 24/01/2009 - 2:30 pm

The Kerr/CFT Correspondence
Speaker(s): Thomas Hartman
Abstract: Holography is usually applied to black holes that are supersymmetric, charged, or living in higher dimensions. The astrophysical Kerr black holes that have been observed in the sky have none of these nice properties, and AdS/CFT does not apply. Nevertheless, by studying the symmetries of the near ho... read more
Date: 24/01/2009 - 4:00 pm

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