Form factors of the XXZ model and the affine quantum group symmetry

摘要

We present new expressions of form factors of the XXZ model which satisfy Smirnov's three axioms. These new form factors are obtained by applying the affine quantum group U-q(<(sl(2))over cap>) to the known ones obtained in our previous works. We also find the relations among all the new and known form factors, i.e. all other form factors are obtained by applying U-q(<(sl(2))over cap>) to a singlet form factor. [References: 11]