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Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma model

by: F. Haldane
Physics Letters A, Vol. 93, No. 9. (14 February 1983), pp. 464-468, doi:10.1016/0375-9601(83)90631-x  Key: citeulike:8635878

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Abstract

An action-angle representation of spin variables is used to relate the large-S Heisenberg antiferromagnet to the O(3) nonlinear sigma model quantum field theory, with precise equivalence for integral S. A variant theory is found for half-integral S. Dynamic mass generation by the Néel magnon is predicted.


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