Free field construction for the eight-vertex model: representation for form factors
Abstract
The free field realization of the eight-vertex model is extended to form factors. It is achieved by constructing off-diagonal with respect to the ground state sectors matrix elements of the Λ operator which establishes a relation between corner transfer matrices of the eight-vertex model and of the SOS model. As an example, the two-particle form factor of the σz operator is evaluated explicitly.
- Publication:
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Nuclear Physics B
- Pub Date:
- January 2002
- DOI:
- 10.1016/S0550-3213(01)00598-3
- arXiv:
- arXiv:hep-th/0103144
- Bibcode:
- 2002NuPhB.621..587L
- Keywords:
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- High Energy Physics - Theory;
- Mathematical Physics;
- Mathematics - Quantum Algebra;
- Nonlinear Sciences - Exactly Solvable and Integrable Systems
- E-Print:
- 26 pages, plain TeX, uses PiCTeX macros. Minor misprints corrected