Form factors of integrable Heisenberg (higher) spin chains
Olalla A. Castro-Alvaredo, Jean Michel Maillet
We present determinant formulae for the form factors of spin operators of general integrable XXX Heisenberg spin chains for arbitrary (finite-dimensional) spin representations. The results apply to any 'mixed' spin chains, such as alternating spin chains, or to spin chains with magnetic impurities.
arXiv:hep-th/0702186•Journal of Physics A Mathematical and Theoretical•Jun 19, 2007•31 citations