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We are grateful to Andrew Strominger for useful conversations. We would like to thank the Mitchell Family Foundation for hospitality in 2018 at the Brinsop Court in England and 2019 Cook's Branch workshop and for continuing support. Part of this work was conducted at the 'Fourth USU Strings and Black Holes Workshop', which was supported by the Department of Physics and the DGCAMP group at Utah State University. We would also like to thank the Centro de Ciencias de Benasque Pedro Pascual for the hospitality where some of the research was carried out. The work of MJR is partially supported through the NSF Grant PHY-1707571, SEV-2016-0597 and PGC2018-095976-B-C21 from MCIU/AEI/FEDER, UE. MJP is supported by an STFC consolidated Grant ST/L000415/1, String Theory, Gauge Theory and Duality.

Analysis of institutional authors

Rodriguez, MjCorresponding Author

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Central charges for AdS black holes

Publicated to:CLASSICAL AND QUANTUM GRAVITY. 39 (4): 45009- - 2022-02-17 39(4), DOI: 10.1088/1361-6382/ac45d8

Authors: Perry, M; Rodriguez, MJ

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Abstract

Nontrivial diffeomorphisms act on the horizon of a generic 4D black holes and create distinguishing features referred to as soft hair. Amongst these are a left-right pair of Virasoro algebras with associated charges that reproduce the Bekenstein-Hawking entropy for Kerr black holes. In this paper we show that if one adds a negative cosmological constant, there is a similar set of infinitesimal diffeomorphisms that act non-trivially on the horizon. The algebra of these diffeomorphisms gives rise to a central charge. Adding a boundary counterterm, justified to achieve integrability, leads to well-defined central charges with c (L) = c (R). The macroscopic area law for Kerr-AdS black holes follows from the assumption of a Cardy formula governing the black hole microstates.

Keywords

Ads black holeBlack hole entropyCentral chargeChargesSoft charges

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal CLASSICAL AND QUANTUM GRAVITY due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics and Astronomy (Miscellaneous).

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.32. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 2.2 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 9.15 (source consulted: Dimensions May 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-05-29, the following number of citations:

  • WoS: 6
  • Scopus: 9
  • OpenCitations: 8

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-29:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 12.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 12 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 0.5.
  • The number of mentions on the social network X (formerly Twitter): 2 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: United Kingdom; United States of America.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (RODRIGUEZ RODRIGUEZ, MARIA JOSE).

the author responsible for correspondence tasks has been RODRIGUEZ RODRIGUEZ, MARIA JOSE.