We first consider an exactly solvable classical field model to understand the coherence
properties and the density fluctuations of a one-dimensional (1D) weakly interacting …

In this article we give a calculation of the two-loop σ-model corrections to the T-duality map
in string theory. We use the effective action approach, and analyze two-loop corrections in a …

A bstract Following arXiv: 1907.04737, we continue our investigation of the relation between
the renormalizability (with finitely many couplings) and integrability in 2d σ-models. We focus …

Classically integrable σ-models are known to be solutions of the 1-loop RG equations, or
“Ricci flow”, with only a few couplings running. In some of the simplest examples of …

We present a brief review on the canonical transformation description of some duality
symmetries in string and gauge theories. In particular, we consider Abelian and non-Abelian …

We prove that a transformation, conjectured in our previous work, between phase-space
variables in σ-models related by Poisson-Lie T-duality is indeed a canonical one. We do so …

A bstract We study the SU (2) Principal Chiral Model (PCM) in the presence of an integrable
η-deformation. We put the theory on\(\mathbb {R}\times {S}^ 1\) with twisted boundary …

We construct a new class of two-dimensional field theories with target spaces that are finite
multiparameter deformations of the usual coset G/H-spaces. They arise naturally, when …

For classical relativistic field theory in Minkowski space‐time, the addition of a superpotential
term to a conserved current density is trivial in the sense that it does not modify the local …

Quantum equivalence in Poisson-Lie T-duality Page 1 Journal of High Energy Physics Quantum
equivalence in Poisson-Lie T-duality To cite this article: Konstadinos Sfetsos and Konstadinos …