Blackfolds in (anti)-de Sitter backgrounds

Jay Armas and Niels A. Obers
Phys. Rev. D 83, 084039 – Published 19 April 2011

Abstract

We construct different neutral blackfold solutions in Anti-de Sitter and de Sitter background spacetimes in the limit where the cosmological constant is taken to be much smaller than the horizon size. This includes a class of blackfolds with horizons that are products of odd-spheres times a transverse sphere, for which the thermodynamic stability is also studied. Moreover, we exhibit a specific case in which the same blackfold solution can describe different limiting black hole spacetimes therefore illustrating the geometric character of the blackfold approach. Furthermore, we show that the higher-dimensional Kerr-(Anti)-de Sitter black hole allows for ultraspinning regimes in the same limit under consideration and demonstrate that this is correctly described by a pancaked blackfold geometry. We also give evidence for the possibility of saturating the rigidity theorem in these backgrounds.

  • Received 3 February 2011

DOI:https://doi.org/10.1103/PhysRevD.83.084039

© 2011 American Physical Society

Authors & Affiliations

Jay Armas* and Niels A. Obers

  • The Niels Bohr Institute, Blegdamsvej, 17, DK-2100 Copenhagen Ø, Denmark

  • *jay@nbi.dk
  • obers@nbi.dk

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Issue

Vol. 83, Iss. 8 — 15 April 2011

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