Vertex operator approach for form factors of Belavin's $(Z/nZ)$-symmetric model

Abstract

Belavin's $(\mathbb{Z}/n\mathbb{Z})$-symmetric model is considered on the basis of bosonization of vertex operators in the $A^{(1)}_{n-1}$ model and vertex-face transformation. Free field representations of nonlocal tail operators are constructed for off diagonal matrix elements with respect to the ground state sectors. As a result, integral formulae for form factors of any local operators in the $(\mathbb{Z}/n\mathbb{Z})$-symmetric model can be obtained, in principle.Comment: 24 pages, 4 figures, published in J. Phys. A: Math. Theor. 43 (2010) 085202. For the next thirty days from Feb 5 2010, the full text of the article will be completely free to access through our 'This Month's Papers' service (www.iop.org/journals/thismonth), helping you to benefit from maximum visibilit