Form factors of boundary exponential operators in the sinh-Gordon model

TL;DR

This paper constructs boundary exponential operator form factors in the sinh-Gordon model using bootstrap equations, verifying their properties and demonstrating applicability to other integrable boundary quantum field theories.

Contribution

It introduces a method to determine form factors of boundary exponential operators in integrable models, extending the boundary form factor bootstrap approach.

Findings

Form factors are explicitly constructed and verified.

Ultraviolet scaling dimensions match known results.

Method applicable to general integrable boundary quantum field theories.

Abstract

Using the recently introduced boundary form factor bootstrap equations, the form factors of boundary exponential operators in the sinh-Gordon model are constructed. The ultraviolet scaling dimension and the normalization of these operators are checked against previously known results. The construction presented in this paper can be applied to determine form factors of relevant primary boundary operators in general integrable boundary quantum field theories.