Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma model
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.
- Publication:
-
Physics Letters A
- Pub Date:
- February 1983
- DOI:
- 10.1016/0375-9601(83)90631-X
- Bibcode:
- 1983PhLA...93..464H