New Expansion for the Classical Heisenberg Model and its Similarity to theIsing Model
- 10 December 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 164 (2) , 709-711
- https://doi.org/10.1103/physrev.164.709
Abstract
The zero-field susceptibility of the classical Heisenberg model is expanded in the new expansion parameter and a formal similarity with the Ising-model expansion is noted. The new Heisenberg-model expansion is seen to provide more reliable extrapolations (especially for one- and two- dimensional lattices) than heretofore, and to permit comparison with Brown's recent work on the Bethe-Peierls approximation.
Keywords
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