Contributor info: Prof. Nikolai Kitanine

Nikolai Kitanine, Giridhar Kulkarni

SciPost Phys. 6, 076 (2019) · published 25 June 2019 | Toggle abstract · pdf

In this paper we propose a method based on the algebraic Bethe ansatz leading to explicit results for the form factors of quantum spin chains in the thermodynamic limit. Starting from the determinant representations we retrieve in particular the formula for the two-spinon form factors for the isotropic XXX Heisenberg chain obtained initially in the framework of the $q$-vertex operator approach.