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High Energy Seminar - Ted Jacobson (University of Maryland) - " Boundary unitarity without firewalls"

Physics Research Building north entrance from across Woodruff Avenue
January 7, 2013
All Day
4138 Physics Research Building

Both AdS/CFT duality and more general reasoning from quantum gravity point to a rich collection of boundary observables that always evolve unitarily. The physical quantum gravity states described by these observables must be solutions of the spatial diffeomorphism and Wheeler-deWitt constraints, which implies that the state space does not factorize into a tensor product of localized degrees of freedom. The recent "firewall" argument that unitarity of black hole S-matrix implies the presence of a highly excited quantum state near the horizon is based on such a factorization, hence is not applicable in quantum gravity.