Directly observing entropy accumulation on the horizon and holography

Ariel Edery, Hugues Beauchesne

Research output: Contribution to journalReview articlepeer-review


Recent numerical simulations of gravitational collapse show that there exists a special foliation of the spacetime where matter and entropy accumulate directly on the inside of the horizon surface. In this foliation, the time coincides with the proper time of the asymptotic static observer (ASO) and for spherical symmetry, this corresponds to isotropic co-ordinates. In this gauge, the three-volume in the interior shrinks to zero and only the horizon area remains at the end of collapse. In a different foliation, matter and entropy accumulate in the volume. The entropy is however independent of the foliation. Black hole holography is therefore a mapping from an arbitrary foliation, where information resides in the volume, to the special ASO frame, where it resides directly on the horizon surface.

Original languageEnglish
JournalInternational Journal of Modern Physics D
Issue number11
StatePublished - 1 Oct 2012
Externally publishedYes


  • Holography
  • Horizon entropy

ASJC Scopus subject areas

  • Mathematical Physics
  • Astronomy and Astrophysics
  • Space and Planetary Science


Dive into the research topics of 'Directly observing entropy accumulation on the horizon and holography'. Together they form a unique fingerprint.

Cite this