2 papers
hep-th2001
The Form Factors and Quantum Equation of Motion in the sine-Gordon Model
H. Babujian, M. Karowski
Using the methods of the 'form factor program' exact expressions of all matrix elements are obtained for several operators of the quantum sine-Gordon model alias the massive Thirri…
hep-th1996
SU(N) Matrix Difference Equations and a Nested Bethe Ansatz
H. Babujian, M. Karowski, A. Zapletal
A system of SU(N)-matrix difference equations is solved by means of a nested version of a generalized Bethe Ansatz, also called "off shell" Bethe Ansatz. The highest weight propert…