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12 papers · 1 filter
Scattering matrices in the sl(3) twisted Yangian
Jean Avan, Anastasia Doikou, Nikos Karaiskos
A quantum spin chain with non-conventional boundary conditions is studied. The distinct nature of these boundary conditions arises from the conversion of a soliton to an anti-solit…
The sine-Gordon model in the presence of defects
Jean Avan, Anastasia Doikou
The sine-Gordon model in the presence of dynamical integrable defects is investigated. This is an application of the algebraic formulation introduced for integrable defects in earl…
The sine-Gordon model with integrable defects revisited
Jean Avan, Anastasia Doikou
Application of our algebraic approach to Liouville integrable defects is proposed for the sine-Gordon model. Integrability of the model is ensured by the underlying classical r-mat…
Integrable quantum spin chains and their classical continuous counterparts
Jean Avan, Anastasia Doikou, Konstadinos Sfetsos
We present certain classical continuum long wave-length limits of prototype integrable quantum spin chains, and define the corresponding construction of classical continuum Lax ope…
Boundary Lax pairs for the Toda field theories
Jean Avan, Anastasia Doikou
Based on the recent formulation of a general scheme to construct boundary Lax pairs,we develop this systematic construction for the affine Toda field theories (ATFT). W…
Correlation functions of the open XXZ chain II
N. Kitanine, K. Kozlowski, J. M. Maillet +3
We derive compact multiple integral formulas for several physical spin correlation functions in the semi-infinite XXZ chain with a longitudinal boundary magnetic field. Our formula…