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Thermodynamic limit of the two-spinon form factors for the zero field XXX chain

Nikolai Kitanine, Giridhar Kulkarni

SciPost Phys. 6, 076 (2019) · published 25 June 2019


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.

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Heisenberg spin chains Quantum spin chains Thermodynamic Bethe Ansatz (TBA)

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