This is a pedagogical review on TT deformation of two dimensional quantum field theories. It
is based on three lectures which the author gave at ITP-CAS in December 2018. This review …

A bstract Superstring theory on\({\mathrm {AdS}} _3\times {S}^ 3\times {\mathbb {T}}^ 4\) with
the smallest amount of NS-NS flux (“k= 1”) is shown to be dual to the spacetime CFT given …

We develop a generic geometric formalism that incorporates both TT¯-like and root-TT¯-like
deformations in arbitrary dimensions. This framework applies to a wide family of stress …

A bstract We consider the problem of exact integration of the\(T\overline {T}\)-deformation of
two dimensional quantum field theories, as well as some higher dimensional extensions in …

A bstract Starting from the recently-discovered\(\mathrm {T}\overline {\mathrm {T}}\)-
perturbed Lagrangians, we prove that the deformed solutions to the classical EoMs for …

A bstract We demonstrate the presence of modular properties in partition functions
of\(T\overline {T}\) deformed conformal field theories. These properties are verified explicitly …

In this Letter, we introduce a one-parameter deformation of two-dimensional quantum field
theories generated by a nonanalytic operator that we call Root-TT¯. For a conformal field …

Given a model for self-dual nonlinear electrodynamics in four spacetime dimensions, any
deformation of this theory which is constructed from the duality-invariant energy-momentum …

A bstract Surprising links between the deformation of 2D quantum field theories induced by
the composite\(\mathrm {T}\overline {\mathrm {T}}\) operator, effective string models and the …

We review different exact approaches to string theory. In the context of the Green–Schwarz
superstring, we discuss the action in curved backgrounds and its supercoset formulation …