N-point matrix elements of dynamical vertex operators of the higher spin XXZ model

TL;DR

This paper generalizes conjugate vertex operators to the higher spin XXZ model, simplifying the calculation of N-point matrix elements by eliminating redundant integrals, notably providing a closed-form for the two-point case.

Contribution

It extends conjugate vertex operators to the higher spin XXZ model, reducing complexity in matrix element calculations and removing unnecessary integrals.

Findings

Simplified N-point matrix element expressions.

Eliminated redundant Jackson integrals.

Derived a closed-form for two-point matrix elements.

Abstract

We extend the concept of conjugate vertex operators, first introduced by Dotsenko in the case of the bosonization of the $su(2)$ conformal field theory, to the bosonization of the dynamical vertex operators (type II in the classification of the Kyoto school) of the higher spin XXZ model. We show that the introduction of the conjugate vertex operators leads to simpler expressions for the N-point matrix elements of the dynamical vertex operators, that is, without redundant Jackson integrals that arise from the insertion of screening charges. In particular, the two-point matrix element can be represented without any integral.