Asymptotically free AdS3/CFT2

Bruno Balthazar, Amit Giveon, David Kutasov, Emil J. Martinec*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


We propose a new AdS3/CFT2 duality, in which the bulk string theory has a target spacetime AdS3 times a squashed three-sphere S♭3, and the dual CFT2 is a symmetric product of sigma models on ℝϕ×S♭3, deformed by a ϕ-dependent ℤ2 twist operator. The duality maps the asymptotic region of AdS3 to the region ϕ → ∞, where the twist interaction in the CFT2 turns off. The AdS3 backgrounds in question have RAdS< ℓs, and so lie on the string side of the string/black hole correspondence transition. As a consequence, the high energy density of states consists of a string gas in AdS3 rather than an ensemble of BTZ black holes. This property allows us to derive the dual CFT2 by a systematic analysis of the worldsheet string theory on AdS3.

Original languageAmerican English
Article number8
JournalJournal of High Energy Physics
Issue number1
StatePublished - Jan 2022

Bibliographical note

Publisher Copyright:
© 2022, The Author(s).


  • AdS-CFT Correspondence
  • Conformal Field Models in String Theory
  • Long strings


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