66 citations · 1.3k across the 97 of their papers we have counts for
4 papers · 1 filter
Transmission amplitudes from Bethe ansatz equations
Anastasia Doikou, Nikos Karaiskos
We consider the Heisenberg spin chain in the presence of integrable spin defects. Using the Bethe ansatz methodology, we extract the associated transmission amplitudes, that descri…
Sigma models in the presence of dynamical point-like defects
Anastasia Doikou, Nikos Karaiskos
Point-like Liouville integrable dynamical defects are introduced in the context of the Landau-Lifshitz and Principal Chiral (Faddeev-Reshetikhin) models. Based primarily on the und…
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…
Solutions of the Generic Non-Compact Weyl Equation
Anastasia Doikou, Theodora Ioannidou
In this paper, solutions of the generic non-compact Weyl equation are obtained. In particular, by identifying a suitable similarity transformation and introducing a non-trivial cha…