A detailed derivation from first principles is given for the unambiguous and slice-
independent formula for the two-loop superstring chiral measure which was announced in …

We present an inverse scattering approach to defects in classical integrable field theories.
Integrability is proved systematically by constructing the generating function of the infinite set …

Recent work on purely transmitting'jump-defects' in the sine-Gordon model and other
relativistic field theories is extended to non-relativistic models. In all the cases investigated …

The classical sine-Gordon model permits integrable discontinuities, or jump-defects, where
the conditions relating the fields on either side of a defect are Bäcklund transformations …

A bstract We introduce the concept of multisymplectic formalism, familiar in covariant field
theory, for the study of integrable defects in 1+ 1 classical field theory. The main idea is the …

Affine Toda field theories with a purely transmitting integrable defect are considered and the
model based on a 2 is analysed in detail. After providing a complete characterization of the …

The one-dimensional problem of N particles with contact interaction in the presence of a
tunable transmitting and reflecting impurity is investigated along the lines of the coordinate …

We use the structural similarity of certain Coxeter Artin systems to the Yang–Baxter and
reflection equations to convert representations of these systems into new solutions of the …

We investigate factorized scattering from a reflecting and transmitting impurity. Bulk
scattering is non-trivial, provided that the bulk scattering matrix depends separately on the …

Inspired by factorized scattering from δ-type impurities in (1+ 1)-dimensional spacetime, we
propose and analyse a generalization of the Zamolodchikov–Faddeev algebra …