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Half-wormholes in nearly AdS2 holography
by Antonio M. García-García, Victor Godet
This Submission thread is now published as
Submission summary
| Ontological classification |
|---|
| Academic field: |
Physics |
| Specialties: |
- High-Energy Physics - Theory
|
| Approaches: |
Theoretical, Computational |
Abstract
We find half-wormhole solutions in Jackiw-Teitelboim gravity by allowing the geometry to end on a spacetime D-brane with specific boundary conditions. This theory also contains a Euclidean wormhole which leads to a factorization problem. We propose that half-wormholes provide a gravitational picture for how factorization is restored and show that the Euclidean wormhole emerges from averaging over the boundary conditions. The wormhole is known to be dual to a Sachdev-Ye-Kitaev (SYK) model with random complex couplings. We find that the free energy of the half-wormhole is strikingly similar to that of a single realization of this SYK model. These results suggest that the gravitational path integral computes an average over spacetime D-brane boundary conditions.
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