De Sitter entropy from conformal field theory

Daniel Kabat, Gilad Lifschytz

Research output: Contribution to journalArticlepeer-review


We propose that the entropy of de Sitter space can be identified with the mutual entropy of a dual conformal field theory. We argue that unitary time evolution in de Sitter space restricts the total number of excited degrees of freedom to be bounded by the de Sitter entropy, and we give a CFT interpretation of this restriction. We also clarify issues arising from the fact that both de Sitter and anti de Sitter have dual descriptions in terms of conformal field theory.

Original languageEnglish
Pages (from-to)415-433
Number of pages19
JournalJournal of High Energy Physics
Issue number4
StatePublished - 1 Apr 2002


  • AdS-CFT and dS-CFT Correspondence
  • Superstring Vacua

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


Dive into the research topics of 'De Sitter entropy from conformal field theory'. Together they form a unique fingerprint.

Cite this