## Abstract

We derive a compact formula for the one-loop, bosonic string partition function of Euclideanized J_{3}J¯_{3} deformed AdS_{3} with periodic Euclidean time as an integral transform of the partition function of the undeformed Euclideanized AdS_{3}. Such a deformation is interpretable as an irrelevant “single-trace TT¯ deformation” of the boundary. We will do this by first establishing a formal procedure to compute a worldsheet torus zero point function for an exactly marginal JJ¯ deformation of a sigma model with U(1)_{L} × U(1)_{R} global symmetry. We then describe how this procedure is implemented on SL(2, R) sigma model and its Euclidean continuation. Finally, we describe the embedding of the deformed SL(2, R) torus amplitude into critical string theory and interpret the result as the leading perturbative contribution to the thermal partition function of the deformed theory.

Original language | English |
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Article number | 141 |

Journal | Journal of High Energy Physics |

Volume | 2024 |

Issue number | 7 |

DOIs | |

State | Published - Jul 2024 |

### Bibliographical note

Publisher Copyright:© The Author(s) 2024.

## Keywords

- AdS-CFT Correspondence
- Gauge-Gravity Correspondence
- Long Strings
- Thermal Field Theory

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