Quantum Antiferromagnets: Continuum Results
In Chapter 12, we have used Haldane’s mapping to relate the long-wavelength correlations of the quantum Heisenberg antiferromagnet (QHA) in d dimensions to those of the Nonlinear Sigma Model (NLSM) in d+1 dimensions with additional Berry phases. In Chapters 13 and 14, the correlation length ξ for the NLSM was found for d=1,2,3 using the continuum approximation.
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- S. Chakravarty, “High Temperature Superconductivity”, edited by K.S. Bedell, D. Coffey, D.E. Meltzer, D. Pines, and J.R. Schrieffer (Addison-Wesley, 1990)Google Scholar