An uneventful horizon in two dimensions

Ahmed Almheiri, James Sully

Research output: Contribution to journalArticlepeer-review


We investigate the possibility of firewalls in the Einstein-dilaton gravity model of CGHS. We use the results of the numerical simulation carried out by Ashtekar et al. to demonstrate that firewalls are absent and the horizon is drama free. We show that the lack of a firewall is consistent because the model does not satisfy one of the postulates of black hole complementarity. In particular, we elaborate on previous work showing that the Hawking radiation is not pure, and is completely entangled with a long-lived remnant beyond the last ray.

Original languageEnglish (US)
Article number108
JournalJournal of High Energy Physics
Issue number2
StatePublished - Feb 2014


  • 2D Gravity
  • Black Holes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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