Entropy of 2D black holes from counting microstates

Mariano Cadoni; Salvatore Mignemi

Entropy of 2D black holes from counting microstates

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arxiv hep-th/9810251 v2 pith:NPZNDXMY submitted 1998-10-30 hep-th gr-qc

Mariano Cadoni , Salvatore Mignemi This is my paper · ORCID

classification hep-thgr-qc

keywords blackentropyholessymmetryagreealgebraanti-deasymptotic

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abstract

We present a microscopical derivation of the entropy of the black hole solutions of the Jackiw-Teitelboim theory. We show that the asymptotic symmetry of two-dimensional (2D) Anti-de Sitter space is generated by a central extension of the Virasoro algebra. Using a canonical realization of this symmetry and Cardy's formula we calculate the statistical entropy of 2D black holes, which turns out to agree, up to a factor $\sqrt 2$, with the thermodynamical result.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 114 citations worldwide. Full citation record

Microscopic entropy of de Sitter spacetime and entropic solution to the old cosmological constant problem
hep-th 2026-06 unverdicted novelty 5.0 of 10

Requiring the RG flow of the de Sitter entropy parameter α to increase monotonically toward the infrared yields a cosmological constant matching the observed value.

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