TT, JT, TJ and string theory

Soumangsu Chakraborty*, Amit Giveon, David Kutasov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Scopus citations


We calculate the spectrum of a two dimensional CFT on a cylinder, perturbed by a general linear combination of TT, JT and TJ , by utilizing the relation of this problem to certain solvable single trace current-current deformations of the worldsheet theory of strings on AdS3. We show that this spectrum is real if and only if the dual bulk geometry has signature (1, 2) with no closed timelike curves. We also comment on the relations of string theory on AdS3 and its deformations to symmetric product CFT s, matrix string theory, and a black hole description of highly excited fundamental strings.

Original languageAmerican English
Article number384003
JournalJournal of Physics A: Mathematical and Theoretical
Issue number38
StatePublished - 26 Aug 2019

Bibliographical note

Publisher Copyright:
© 2019 IOP Publishing Ltd.


  • integrable deformations of cft2
  • irrelevant deformations (TT, JT etc)
  • string worldsheet theory


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