English

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

High Energy Physics - Theory 2026-04-17 v1 Mathematical Physics math.MP

Abstract

Quasi-primary correlators in two-dimensional conformal field theories deformed simultaneously by TTˉT\bar T and root-TTˉT\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 TTˉT\bar T coupling and to leading order in the root-TTˉT\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 TTˉT\bar T deformation and the combined flow. In this way, the mixed TTˉT\bar T/root-TTˉT\bar T deformation is incorporated into the geometric description of irrelevant deformations, and the structure of local correlators beyond the pure TTˉT\bar T case is characterized more explicitly.

Keywords

Cite

@article{arxiv.2604.14939,
  title  = {Correlators in $T\bar{T}$ and Root-$T\bar{T}$ Deformed CFTs},
  author = {Bo-Rui Li and Song He and Yu-Xiao Liu},
  journal= {arXiv preprint arXiv:2604.14939},
  year   = {2026}
}

Comments

24 pages, 1 figure