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.
Cited by 2
Babenko et al., A thermal form factor series for the longitudinal two-point function of the Heisenberg–Ising chain in the antiferromagnetic massive regime
62, 041901 (2021) [Crossref]
Babenko et al., Exact Real-Time Longitudinal Correlation Functions of the Massive
Phys. Rev. Lett. 126, 210602 (2021) [Crossref]