The continuum field theory describing the low-energy dynamics of the large-spin one-dimensional Heisenberg antiferromagnet is found to be the O(3) nonlinear sigma model. When weak easy-axis anisotropy is present, soliton solutions of the equations of motion are obtained and semiclassically quantized. Integer and half-integer spin systems are distinguished.
No takes yet. Share an insight, caveat, or question.
F. D. M. Haldane (1983) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: