A rapidityindependent parameter in the startriangle relation
Abstract
The normalization factor in the startriangle relation can be evaluated in a simple form by taking determinants. If we combine this with the rotation symmetries, then we can show that a certain simple quantity $I$ has to be independent of the rapidities. In this sense it is an invariant. We evaluate it for several particular models and find it is one for selfdual models, and is related to the modulus $k$ (or $k'$) for the Ising, KashiwaraMiwa and chiral Potts models.
 Publication:

arXiv eprints
 Pub Date:
 August 2001
 arXiv:
 arXiv:condmat/0108363
 Bibcode:
 2001cond.mat..8363B
 Keywords:

 Statistical Mechanics
 EPrint:
 18 pages