"Double-trace" deformations, boundary conditions and spacetime singularities

Micha Berkooz*, Amit Sever, Assaf Shomer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Double-trace deformations of the AdS/CFT duality result in a new perturbation expansion for string theory, based on a non-local worldsheet. We discuss some aspects of the deformation in the low energy gravity approximation, where it appears as a change in the boundary condition of fields. We relate unique features of the boundary of AdS to the worldsheet becoming non-local, and conjecture that non-local worldsheet actions may be generic in other classes of backgrounds.

Original languageEnglish
Pages (from-to)851-868
Number of pages18
JournalJournal of High Energy Physics
Issue number5
StatePublished - 1 May 2002
Externally publishedYes


  • AdS-CFT and dS-CFT Correspondence
  • Black Holes in String Theory
  • Conformal Field Models in String Theory
  • Superstring Vacua


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