Date of Original Version
It is found that there exist special circumstances for which a rigorous relation between the three dynamic structure factors Sμμ(q, ω), μ=x, y, z, at T=0 of the one-dimensional spin-sXYZ model in a uniform magnetic field can be derived. This relation is used to infer new exact results for Sxx(q, ω) of the S= case1/2 anisotropic XY model.
Gerhard Müller and Robert E. Shrock. Dynamic correlation functions for the one-dimensional XYZ model: new exact results. J. Magnetism and Magn. Materials 54-57 (1986), 1255-1256.