Holography Beyond AdS

Meseret Asrat, Amit Giveon, Nissan Itzhaki, David Kutasov

Research output: Contribution to journalArticlepeer-review

81 Scopus citations


We continue our study of string theory in a background that interpolates between AdS3 in the infrared and a linear dilaton spacetime R1,1×Rϕ in the UV. This background corresponds via holography to a CFT2 deformed by a certain irrelevant operator of dimension (2,2). We show that for two point functions of local operators in the infrared CFT, conformal perturbation theory in this irrelevant operator has a finite radius of convergence in momentum space, and one can use it to flow up the renormalization group. The spectral density develops an imaginary part above a certain critical value of the spectral parameter; this appears to be related to the non-locality of the theory. In position space, conformal perturbation theory has a vanishing radius of convergence; the leading non-perturbative effect is an imaginary part of the two point function.

Original languageAmerican English
Pages (from-to)241-253
Number of pages13
JournalNuclear Physics B
StatePublished - Jul 2018

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