Exact Results for the Dynamics of the Classical Nearest-Neighbor Heisenberg Chain Near
- 24 October 1977
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 39 (17), 1047-1050
- https://doi.org/10.1103/physrevlett.39.1047
Abstract
We present rigorous perturbation results for the dynamics of the classical nearest-neighbor Heisenberg chain, using the temperature as a small parameter. The lifetime and the frequency shift of the spin waves are determined. For the antiferromagnet we find that there is a region of wave vectors close to the zone boundary where the dynamical scaling fails and we argue that this is a general property of the Heisenberg chain close to .
Keywords
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