Generalized uncertainty principle and black holes in higher dimensional self-complete gravity

Marco Knipfer, Sven Köppel, Jonas Mureika, Piero Nicolini

Research output: Contribution to journalArticlepeer-review


In this paper we consider generalized uncertainty principle (GUP) effects in higher dimensional black hole spacetimes via a nonlocal gravity approach. We study three possible modifications of momentum space measure emerging from GUP, including the original Kempf-Mangano-Mann (KMM) proposal. By following the KMM model we derive a family of black hole spacetimes. The case of five spacetime dimensions is a special one. We found an exact black hole solution with a Barriola-Vilenkin monopole at the origin. This object turns out to be the end point of the black hole evaporation. Interestingly for smaller masses, we found a "naked monopole" rather than a generic naked singularity. We also show that the Carr-Lake-Casadio-Scardigli proposal leads to mild modifications of spacetime metrics with respect to the Schwarzschild-Tangherlini solution. Finally, by demanding the same degree of convergence in the ultraviolet regime for any spacetime dimension, we derive a family of black hole solutions that fulfill the gravity self-completeness paradigm. The evaporation of such black holes is characterized by a fluctuating luminosity, which we dub a lighthouse effect.

Original languageEnglish (US)
Article number008
JournalJournal of Cosmology and Astroparticle Physics
Issue number8
StatePublished - Aug 8 2019


  • modified gravity
  • quantum black holes

ASJC Scopus subject areas

  • Astronomy and Astrophysics


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