Regular basis and R-matrices for the su(n)_k Knizhnik-Zamolodchikov equation

L. K. Hadjiivanov, Ya. S. Stanev, I. T. Todorov

Dynamical R-matrix relations are derived for the group-valued chiral vertex operators in the SU(n) WZNW model from the KZ equation for a general four-point function including two s…