arXiv:1610.04926 · Physics Letters B
Algebraic approach to form factors in the complex sinh-Gordon theory
Michael Lashkevich, Yaroslav Pugai
Abstract
We study form factors of the quantum complex sinh-Gordon theory in the algebraic approach. In the case of exponential fields the form factors can be obtained from the known form factors of the ZN-symmetric Ising model. The algebraic construction also provides an Ansatz for form factors of descendant operators. We obtain generating functions of such form factors and establish their main properties: the cluster factorization and reflection equations.