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hep-th2026
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…
hep-th2026
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…
hep-th2026
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…