31 citations · 58 across the 12 of their papers we have counts for
21 papers
Quantum State of a Gravitating Spacetime Region
Raphael Bousso, Sami Kaya, Guanda Lin +1
We associate a gravitational Hilbert space to any closed compact -manifold with real metric. A quantum state is a -manifold bounded by…
Quantum State of a Gravitating Region
Raphael Bousso, Sami Kaya, Guanda Lin +1
We propose that any compact -manifold with elliptic data, , prepares a quantum state on its -boundary . Elliptic data consists of me…
Consistent Evaluation of the No-Boundary Proposal
Ahmed I. Abdalla, Stefano Antonini, Raphael Bousso +3
We revisit the Hartle-Hawking no-boundary proposal. To extract probabilities, one must use the gravitational path integral (GPI) to compute not only the no-boundary amplitude, but…
Constraints on the resolution of spacetime singularities
Arvin Shahbazi-Moghaddam
What happens at spacetime singularities is poorly understood. The Penrose-Wall singularity theorem constrains possible scenarios, but until recently its key assumption--the general…
Tests of restricted Quantum Focusing and a new CFT bound
Victor Franken, Sami Kaya, François Rondeau +2
The restricted quantum focusing conjecture (rQFC) plays a central role in an axiomatic formulation of semiclassical gravity. Since much hinges on its validity, it is imperative to…
The Structure of Quantum Singularities on a Cauchy Horizon
Arvin Shahbazi-Moghaddam
Spacetime singularities pose a long-standing puzzle in quantum gravity. Unlike Schwarzschild, a generic family of black holes gives rise to a Cauchy horizon on which, even in the H…