Geometric model of black hole quantum N-portrait, extradimensions and thermodynamics

Antonia M. Frassino, Sven Köppel, Piero Nicolini

Research output: Contribution to journalArticlepeer-review


Recently a short scale modified black hole metric, known as holographic metric, has been proposed in order to capture the self-complete character of gravity. In this paper we show that such a metric can reproduce some geometric features expected from the quantum N-portrait beyond the semi-classical limit. We show that for a generic N this corresponds to having an effective energy momentum tensor in Einstein equations or, equivalently, non-local terms in the gravity action. We also consider the higher dimensional extension of the metric and the case of an AdS cosmological term. We provide a detailed thermodynamic analysis of both cases, with particular reference to the repercussions on the Hawking-Page phase transition.

Original languageEnglish (US)
Article number181
Issue number5
StatePublished - May 2016


  • Black hole evaporation
  • Black hole thermodynamics

ASJC Scopus subject areas

  • Information Systems
  • General Physics and Astronomy
  • Electrical and Electronic Engineering
  • Mathematical Physics
  • Physics and Astronomy (miscellaneous)


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