Bethe ansatz and exact form factors of theO(6) Gross Neveu-model

Abstract

The isomorphism SU (4) O(6) is used to construct the form factors of the O(6) Gross-Neveu model as bound state form factors of the SU (4) chiral Gross-Neveu model. This technique is generalized and is then applied to use the O(6) as the starting point of the nesting procedure to obtain the O(N) form factors for general even N .

Quantum integrability and quantum groups: a special issue in memory of Petr P Kulish

“…Integrable boundary conditions for the two-dimensional O(N ) nonlinear sigma model, both at the classical and quantum levels, are analyzed in [8]. Form factors for the O(2n) Gross-Neveu model are constructed in [9]. Form factors for the SU (N ) × SU (N ) Principal Chiral Field model are obtained in [10].…”