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Near-Extremal Limits of Warped Black Holes
by Ankit Aggarwal, Alejandra Castro, Stéphane Detournay, Beatrix Mühlmann
Submission summary
| Authors (as registered SciPost users): | Ankit Aggarwal · Alejandra Castro |
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| Preprint Link: | https://arxiv.org/abs/2304.10102v2 (pdf) |
| Date accepted: | July 18, 2023 |
| Date submitted: | July 12, 2023, 3:31 a.m. |
| Submitted by: | Ankit Aggarwal |
| Submitted to: | SciPost Physics |
| Ontological classification | |
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| Academic field: | Physics |
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| Approach: | Theoretical |
Abstract
A holographic description of three-dimensional warped black holes suffers from ambiguities due to a seemingly harmless choice of coordinate system. This gives rise to the notion of ensembles in warped black holes, and we focus on two of them: the canonical and quadratic ensemble. Our aim is to quantify the imprint of these ensembles in the near-extremal limit of a warped black hole. To this end, for each ensemble, we explore the thermodynamic response and evaluate greybody factors. We also set-up a holographic dictionary in their near-AdS$_2$ region, and decode aspects of the dual near-CFT$_1$. This gives us different perspectives of the black hole that we can contrast and compare. On the one hand, we find perfect agreement between the near-extremal limit of the canonical ensemble warped black holes, their near-AdS$_2$ effective analysis, and a warped conformal field theory description. On the other, we are led to rule out the quadratic ensemble due to inconsistencies at the quantum level with the near-AdS$_2$ effective description.
Author comments upon resubmission
List of changes
Based on the referee reports: 1. Minor typos corrected. 2. A reference suggested by the referee was added. 3. A footnote was incorporated in the main text.
Published as SciPost Phys. 15, 083 (2023)