A bstract In this paper we derive the tree-level S-matrix of the effective theory of Goldstone
bosons known as the non-linear sigma model (NLSM) from string theory. This novel …

A bstract We present\(\mathcal {N}\)= 2 superconformal U (1) duality-invariant models for an
Abelian vector multiplet coupled to conformal supergravity. In a Minkowski background, such …

A bstract The\(T\overline {T}\) deformation of a supersymmetric two-dimensional theory
preserves the original supersymmetry. Moreover, in several interesting cases the deformed …

We show that the recently introduced ModMax theory of electrodynamics and its Born-Infeld-
like generalization are related by a flow equation driven by a quadratic combination of stress …

We develop a general formalism of duality rotations for bosonic conformal spin-s gauge
fields, with s≥ 2, in a conformally flat four-dimensional spacetime. In the s= 1 case, this …

A bstract We propose a new family of U (1) duality-invariant models for nonlinear\(\mathcal
{N}\)= 1 supersymmetric electrodynamics coupled to supergravity. It includes the Cribiori …

We show that any conformal field theory in d-dimensional Minkowski space, in a phase with
spontaneously broken conformal symmetry and with the dilaton among its fields, can be …

A bstract We deform the action and the supersymmetry transformations of the d= 10 and d= 4
Maxwell supermultiplets so that at each order of the deformation the theory has 16 Maxwell …

We review the current state of research on the construction of effective actions in
supersymmetric quantum field theory. Special attention is paid to gauge models with …

We analyze a recent conjecture regarding the perturbative construction of nonlinear
deformations of all classically duality-invariant theories, including N= 8 supergravity. Starting …