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 …

A bstract We study families of one-dimensional CFTs relevant for describing gapped QFTs in
AdS 2. Using the Polyakov bootstrap as our main tool, we explain how S-matrices emerge …

In this paper, we propose a new representation of the minimal form factors in integrable
quantum field theories. These are solutions of the two-particle form factor equations, which …

A bstract The study of\(\textrm {T}\overline {\textrm {T}}\)-perturbed quantum field theories is
an active area of research with deep connections to fundamental aspects of the scattering …

A bstract In two recent papers [1, 2] we have proposed a program of study which allows us to
compute the correlation functions of local and semi-local fields in generalised\(\textrm …

We study systems in arbitrary space-time dimensions where matter, deformed by TT‾-like
irrelevant operators, is coupled to gravity in the Palatini formalism. The dynamically …

A bstract We study Ising Field Theory (the scaling limit of Ising model near the Curie critical
point) in pure imaginary external magnetic field. We put particular emphasis on the detailed …

A bstract The ODE/IM correspondence is an exact link between classical and quantum
integrable models. The primary purpose of this work is to show that it remains valid …

A bstract We revisit the space of gapped quantum field theories with a global O (N) symmetry
in two spacetime dimensions. Previous works using S-matrix bootstrap revealed a rich …

A bstract We study solvable deformations of two-dimensional quantum field theories driven
by a bilinear operator constructed from a pair of conserved U (1) currents J a. We propose a …