Weak cosmic censorship and the second law of black hole thermodynamics in higher derivative gravity

Feng Li Lin, Bo Ning*, Yanbei Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Infalling matter may destroy a black hole and expose the naked singularity. Thus, Penrose proposed the weak cosmic censorship conjecture to avoid such a possibility. On the other hand, if the black hole is not destroyed by infalling matter, from the second law of black hole thermodynamics, the black hole entropy should increase due to the information carried by the infalling matter. In this work, we demonstrate by examples of perturbative near-extremal black holes in higher derivative gravity theories that the second law implies weak cosmic censorship. We also compare our proposal to the one developed by Sorce and Wald based on the first law of black hole thermodynamics and show that the latter fails to yield weak cosmic censorship in such cases. Finally, we give proof of our proposal for generic gravity theories.

Original languageEnglish
Article number044025
JournalPhysical Review D
Volume108
Issue number4
DOIs
Publication statusPublished - 2023 Aug 15

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Weak cosmic censorship and the second law of black hole thermodynamics in higher derivative gravity'. Together they form a unique fingerprint.

Cite this