The development of Relativistic Quantum Field Theory started in 1932 as a natural
extension of Quantum Mechanics to the relativistic domain [1]. The work of Feynman in the …

In this paper we compute the leading correction to the bipartite entanglement entropy at
large sub-system size, in integrable quantum field theories with diagonal scattering matrices …

We present some exact results on universal quantities derived from the local density matrix
ρ, for a free massive Dirac field in two dimensions. We first find trρ n in a novel fashion …

We discuss the thermodynamic Bethe ansatz, and explain how it allows one to reduce the
infinite-volume thermodynamics of a (1+ 1)-dimensional purely elastic scattering theory to …

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 …

The bootstrap program for determining Green's functions from an exact S matrix is carried
out for the simplest soliton field theory of a scalar field with S-matrix operator S=(− 1) N (N …

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 elaborate on a recently conjectured relation of Painlevé transcendents and 2D
conformal field theory. General solutions of Painlevé VI, V and III are expressed in terms of …

A bstract We merge together recent developments in the S-matrix bootstrap program to
develop a dual setup in 2 space-time dimensions incorporating scattering amplitudes of …

Using the Ising model with a thermal perturbation as an example, we show that the solution
space of the linear equations satisfied by the off-shell form factors of an integrable perturbed …