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arXiv · 2604.14939

Correlators in $T\bar{T}$ and Root-$T\bar{T}$ Deformed CFTs

Bo-Rui Li·Song He·Yu-Xiao Liu
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Abstract

Quasi-primary correlators in two-dimensional conformal field theories deformed simultaneously by $T\bar T$ and root-$T\bar T$ are studied. A path-integral formulation motivated by the geometric realization of the combined deformation is used to develop a geometric framework for evaluating the deformed correlators. Within this framework, the two-point function is obtained to all orders in the $T\bar T$ coupling and to leading order in the root-$T\bar T$ coupling, while the leading correction to the three-point function is computed. It is further shown that the deformed two-point correlator admits a kernel representation as a weighted average of undeformed CFT correlators over conformal dimensions. This representation is derived explicitly for both the pure $T\bar T$ deformation and the combined flow. In this way, the mixed $T\bar T$/root-$T\bar T$ deformation is incorporated into the geometric description of irrelevant deformations, and the structure of local correlators beyond the pure $T\bar T$ case is characterized more explicitly.

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Bo-Rui Li, Song He, Yu-Xiao Liu. 2026-04-16. Correlators in $T\bar{T}$ and Root-$T\bar{T}$ Deformed CFTs. https://arxiv.org/abs/2604.14939

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