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Boundary Conditions for Extremal Black Holes from 2d Gravity

by Stephane Detournay, Thomas Smoes and Raphaela Wutte

This Submission thread is now published as

Submission summary

Authors (as registered SciPost users): Thomas Smoes · Raphaela Wutte
Submission information
Preprint Link: scipost_202403_00003v2  (pdf)
Date accepted: 2024-05-13
Date submitted: 2024-05-07 02:57
Submitted by: Wutte, Raphaela
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Theory
Approach: Theoretical

Abstract

We devise new boundary conditions for the near-horizon geometries of extremal BTZ and Kerr black holes, as well as for the ultra-cold limit of the Kerr-de Sitter black hole. These boundary conditions are obtained as the higher-dimensional uplift of recently proposed boundary conditions in two-dimensional gravity. Their asymptotic symmetries consist in the semi-direct product of a Virasoro and a current algebra, of which we determine the central extensions.

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
  • Detail a groundbreaking theoretical/experimental/computational discovery
  • Present a breakthrough on a previously-identified and long-standing research stumbling block

Author comments upon resubmission

We have addressed the comments and questions of the referees by supplementing our paper with a conclusion. In addition, we have added several sentences in other parts of the paper for additional clarification.

List of changes

-) changed last sentence in first paragraph of page 4
-) changed last sentence in second paragraph of page 4
-) changed sentence directly before equation (16) on page 6
-) added 2 sentences directly below equation (16) and on page 6
-) added 2 sentences at the end of the paragraph below equation (19) on page 7
-) added one sentence below equation (27) on page 8
-) added last paragraph at the very end of section 2.4.
-) added conclusion and table

Published as SciPost Phys. 16, 141 (2024)


Reports on this Submission

Report #2 by Anonymous (Referee 1) on 2024-5-8 (Invited Report)

Report

The authors have addressed all my comments. I recommend that this paper be accepted for publication on SciPost.

Recommendation

Publish (easily meets expectations and criteria for this Journal; among top 50%)

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Report #1 by Anonymous (Referee 2) on 2024-5-7 (Invited Report)

Report

I am happy with the changes made by the authors and I support the paper for publication.

Recommendation

Publish (meets expectations and criteria for this Journal)

  • validity: -
  • significance: -
  • originality: -
  • clarity: -
  • formatting: -
  • grammar: -

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