Free field construction for the eightvertex model: representation for form factors
Abstract
The free field realization of the eightvertex model is extended to form factors. It is achieved by constructing offdiagonal with respect to the ground state sectors matrix elements of the Λ operator which establishes a relation between corner transfer matrices of the eightvertex model and of the SOS model. As an example, the twoparticle form factor of the σ^{z} operator is evaluated explicitly.
 Publication:

Nuclear Physics B
 Pub Date:
 January 2002
 DOI:
 10.1016/S05503213(01)005983
 arXiv:
 arXiv:hepth/0103144
 Bibcode:
 2002NuPhB.621..587L
 Keywords:

 High Energy Physics  Theory;
 Mathematical Physics;
 Mathematics  Quantum Algebra;
 Nonlinear Sciences  Exactly Solvable and Integrable Systems
 EPrint:
 26 pages, plain TeX, uses PiCTeX macros. Minor misprints corrected