COMPLETE SOLUTION OF THE XXZ-MODEL ON FINITE RINGS. DYNAMICAL STRUCTURE FACTORS AT ZERO TEMPERATURE.
arXiv:cond-mat/9502072 · doi:10.1088/0953-8984/7/28/017
Abstract
The finite size effects of the dynamical structure factors in the XXZ-model are studied in the euclidean time -representation. Away from the critical momentum finite size effects turn out to be small except for the large limit. The large finite size effects at the critical momentum signal the emergence of infrared singularities in the spectral -representation of the dynamical structure factors.
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