1983/04/11 by F. D. M. Haldane · 3,715 citations
Physics and Astronomy · Mathematics · #Physics of Superconductivity and Magnetism #Nonlinear Waves and Solitons #Nonlinear Photonic Systems #Physics #Nonlinear system #Spin (aerodynamics) #Quantum mechanics #Heisenberg model #Soliton #Integer (computer science) #Antiferromagnetism #Sigma model #Anisotropy #Field (mathematics) #Mathematical physics #Mathematics
paper · pdf · doi:10.1103/physrevlett.50.1153
published in Physical Review Letters 50(15), 1153-1156 (American Physical Society)
openalex publication_date 1983/04/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
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.