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Half-wormholes in nearly AdS$_2$ holography
by Antonio M. García-García, Victor Godet
This Submission thread is now published as
Submission summary
| Submission information |
| Preprint Link: |
scipost_202109_00031v3
(pdf)
|
| Date accepted: |
2022-03-31 |
| Date submitted: |
2022-03-24 09:59 |
| Submitted by: |
Godet, Victor |
| Submitted to: |
SciPost Physics |
| 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.
Author comments upon resubmission
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