2019/04/30 by Soumangsu Chakraborty, Chakraborty, Soumangsu, Amit Giveon +3 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.1905.00051
openalex publication_date 2019/04/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 well behaved (i.e. the energies are real) if and only if the dual bulk geometry is well behaved (i.e. the signature of the bulk spacetime is (1,2) and there are 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.