SciPost Submission Page
Extremality as a Consistency Condition on Subregion Duality
by Ronak M Soni
Submission summary
| Authors (as registered SciPost users): | Ronak Soni |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2403.19562v2 (pdf) |
| Date submitted: | 2024-09-06 08:10 |
| Submitted by: | Soni, Ronak |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
In JT gravity coupled to a CFT, I argue without using the path integral that the entanglement wedge of a boundary region is bounded by a quantum extremal surface (QES). For any candidate not bounded by a QES, a unitary in the complement can make reconstruction within the candidate inconsistent with boundary causality. The case without islands is a direct consequence of subregion duality, and the case with islands can also be dealt with with a stronger assumption.
Author indications on fulfilling journal expectations
- Provide a novel and synergetic link between different research areas.
- Open a new pathway in an existing or a new research direction, with clear potential for multi-pronged follow-up work
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- Present a breakthrough on a previously-identified and long-standing research stumbling block
List of changes
Rearranged the presentation for clarity.
Major changes:
1. More discussion of plausibility of assumptions (sec 4.1).
2. More steps in the logic of the main argument, including clear indication of where each assumption is used (sec 4.2).
3. Moved discussion of dressing to section 3.4
4. Changed some notation; now, *all* bulk operators are small letters.