566 citations · 1.4k across the 26 of their papers we have counts for
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Boundary Quantum Field Theories Perturbed by : Towards a Form Factor Program
Olalla A. Castro-Alvaredo, Stefano Negro, Fabio Sailis
Our understanding of irrelevant perturbations of integrable quantum field theories has greatly expanded over the last decade. In particular, we know that, from a scattering theory…
Gravity and flows in higher dimensions
Tommaso Morone, Stefano Negro, Roberto Tateo
We study systems in arbitrary space-time dimensions where matter, deformed by -like irrelevant operators, is coupled to gravity in the Palatini formalis…
On the Representation of Minimal Form Factors in Integrable Quantum Field Theory
Olalla A. Castro-Alvaredo, Stefano Negro, István M. Szécsényi
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, whic…
The Generalised Born Oscillator and the Berry-Keating Hamiltonian
Francesco Giordano, Stefano Negro, Roberto Tateo
In this study, we introduce and investigate a family of quantum mechanical models in 0+1 dimensions, known as generalized Born quantum oscillators. These models represent a one-par…
Entanglement Entropy from Form Factors in -Deformed Integrable Quantum Field Theories
Olalla A. Castro-Alvaredo, Stefano Negro, Fabio Sailis
In two recent papers we have proposed a program of study which allows us to compute the correlation functions of local and semi-local fields in generalised $\mathrm{T}\bar{\mathrm{…
Form Factors and Correlation Functions of -Deformed Integrable Quantum Field Theories
Olalla A. Castro-Alvaredo, Stefano Negro, Fabio Sailis
The study of -perturbed quantum field theories is an active area of research with deep connections to fundamental aspects of the scattering theory…
Completing the Bootstrap Program for -Deformed Massive Integrable Quantum Field Theories
Olalla A. Castro-Alvaredo, Stefano Negro, Fabio Sailis
In recent years a considerable amount of attention has been devoted to the investigation of 2D quantum field theories perturbed by certain types of irrelevant operators. These are…
Topological Gauging and Double Current Deformations
Sergei Dubovsky, Stefano Negro, Massimo Porrati
We study solvable deformations of two-dimensional quantum field theories driven by a bilinear operator constructed from a pair of conserved currents . We propose a quan…
Deforming the ODE/IM correspondence with
Fabrizio Aramini, Nicolò Brizio, Stefano Negro +1
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 after $\mathrm{T}\bar{…
Deterministic Chaos vs Integrable Models
Stefano Negro, Fedor K. Popov, Jacob Sonnenschein
In this work we present analytical and numerical evidences that classical integrable models possessing infinitely many degrees of freedom unexpectedly exhibit some features that ar…
Thermodynamic Bethe Ansatz past turning points: the (elliptic) sinh-Gordon model
Lucía Córdova, Stefano Negro, Fidel I. Schaposnik Massolo
We analyze the Thermodynamic Bethe Ansatz (TBA) for various integrable S-matrices in the context of generalized deformations. We focus on the sinh-Gordon model and its el…
On Factorizable S-matrices, Generalized TTbar, and the Hagedorn Transition
Giancarlo Camilo, Thiago Fleury, Máté Lencsés +2
We study solutions of the Thermodynamic Bethe Ansatz equations for relativistic theories defined by the factorizable -matrix of an integrable QFT deformed by CDD factors. Such $…
Geometric aspects of the ODE/IM correspondence
Patrick Dorey, Clare Dunning, Stefano Negro +1
This review describes a link between Lax operators, embedded surfaces and Thermodynamic Bethe Ansatz equations for integrable quantum field theories. This surprising connection bet…
Flow equations for generalised deformations
Guzmán Hernández-Chifflet, Stefano Negro, Alessandro Sfondrini
We consider the most general set of integrable deformations extending the deformation of two-dimensional relativistic QFTs. They are CDD deformations of the theory's fac…
Conserved currents and irrelevant deformations of 2D integrable field theories
Riccardo Conti, Stefano Negro, Roberto Tateo
It has been recently discovered that the deformation is closely-related to Jackiw-Teitelboim gravity. At classical level, the introduction of this perturba…
The perturbation and its geometric interpretation
Riccardo Conti, Stefano Negro, Roberto Tateo
Starting from the recently-discovered -perturbed Lagrangians, we prove that the deformed solutions to the classical EoMs for bosonic field theories are…
Generalised Born-Infeld models, Lax operators and the perturbation
Riccardo Conti, Leonardo Iannella, Stefano Negro +1
Surprising links between the deformation of 2D quantum field theories induced by the composite operator, effective string models and the CFT cor…
Integrability of Conformal Fishnet Theory
Nikolay Gromov, Vladimir Kazakov, Gregory Korchemsky +2
We study integrability of fishnet-type Feynman graphs arising in planar four-dimensional bi-scalar chiral theory recently proposed in arXiv:1512.06704 as a special double scaling l…
ODE/IM Correspondence in Toda Field Theories and Fermionic Basis in sin(h)-Gordon Model
Stefano Negro
The first part of this work consists of a study of the ODE/IM correspondence for simply-laced affine Toda field theories. It is a first step towards a full generalisation of the re…
-deformed 2D Quantum Field Theories
Andrea Cavaglià, Stefano Negro, István M. Szécsényi +1
It was noticed many years ago, in the framework of massless RG flows, that the irrelevant composite operator , built with the components of the energy-momentum tensor, e…
An Integrability Primer for the Gauge-Gravity Correspondence: an Introduction
Diego Bombardelli, Alessandra Cagnazzo, Rouven Frassek +7
We introduce a series of articles reviewing various aspects of integrable models relevant to the AdS/CFT correspondence. Topics covered in these reviews are: classical integrabilit…
On sinh-Gordon Thermodynamic Bethe Ansatz and fermionic basis
Stefano Negro
We review the construction of the fermionic basis for sinh-Gordon model and investigate numerically the ultra-violet limit of the one-point functions. We then compare the predictio…
On one-point functions for sinh-Gordon model at finite temperature
S. Negro, F. Smirnov
Using fermionic basis we conjecture the exact formulae for the expectation values of local fields in sinh-Gordon model. The conjecture is checked against previously known results.
Reflection relations and fermionic basis
S. Negro, F. Smirnov
There are two approaches to computing the one-point functions for sine-Gordon model in infinite volume. One is a bootstrap type procedure based on the reflection relations. Another…