Speaker
Mr
Sascha Gehrmann
(Leibniz University Hannover)
Description
The periodic staggered six-vertex model with the anisotropy parameter (|q|=1) is critical and exhibits several phases with interesting universal behaviour. In a certain regime its scaling limit possesses a non-compact degree of freedom. In this talk, we discuss the influence of quantum group invariant boundary conditions on the finite-size spectrum of the model in the special case of the non-compact regime (arXiv:2111.00850). We interpret our results in the context of the (D^{(2)}_2) spin chain, whose $R$-matrix can be factorised into that of the six-vertex model, and identify a more general correspondence of boundary conditions of models which factorise (arXiv:2209.06182).
