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Half-wormholes in nearly AdS$_2$ holography
by Antonio M. García-García, Victor Godet
Submission summary
| Authors (as registered SciPost users): | Victor Godet |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202109_00031v3 (pdf) |
| Date accepted: | March 31, 2022 |
| Date submitted: | March 24, 2022, 9:59 a.m. |
| Submitted by: | Victor Godet |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| 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
Published as SciPost Phys. 12, 135 (2022)