PIRSA:17070031 Scientific Series Other

DOI10.48660/17070031

Series: Cosmology and Gravitation

Carlip, S. (2017). Black Hole Entropy from BMS Symmetry at the Horizon. Perimeter Institute. https://pirsa.org/17070031

Carlip, Steve. Black Hole Entropy from BMS Symmetry at the Horizon. Perimeter Institute, Jul. 17, 2017, https://pirsa.org/17070031 

@misc{ pirsa_PIRSA:17070031,
  doi = {10.48660/17070031},
  url = {https://pirsa.org/17070031},
  author = {Carlip, Steve},
  keywords = {Other},
  language = {en},
  title = {Black Hole Entropy from BMS Symmetry at the Horizon},
  publisher = {Perimeter Institute},
  year = {2017},
  month = {jul},
  note = {PIRSA:17070031 see, \url{https://pirsa.org}}
}

Abstract

One of the basic puzzles of black hole thermodynamics is the simplicity and universality of the  Bekenstein-Hawking entropy. The idea that this entropy might be governed by a symmetry at the horizon is an old one, but until now efforts have focused on conformal symmetries, either at infinity or on a "stretched horizon."  I argue that a better approach uses a BMS-like symmetry of the horizon itself.  This avoids the limitations of previous attempts (including my own), and explains the entropy in terms of a generalization of the Cardy formula for the density of states.

 

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