Continuum in the spin excitation spectrum of a Haldane chain (erratum)

I. A. Zaliznyak, S. -H. Lee, S. V. Petrov

There was a slight error in calculating the nonlinear sigma-model prediction for the 2-magnon scattering continuum shown in Fig. 2 of cond-mat/0010049, and Phys. Rev. Lett. {\bf 87…