Antiferromagnetism, projected density of states, and the Bogoliubov transformation for bosons
- 1 January 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 25 (1), 432-435
- https://doi.org/10.1103/physrevb.25.432
Abstract
We investigate the spectral density of an antiferromagnet described by a Heisenberg Hamiltonian and find that the procedure commonly followed to evaluate the localized density of magnon states leads to inconsistent results. These inconsistencies are illustrated with a detailed discussion of the one-dimensional antiferromagnetic chain.Keywords
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