Schwinger-boson calculation for a frustrated antiferromagnet
Condensed Matter
2009-11-07 v2
Abstract
The application of the Schwinger-boson transformation to quantum Heisenberg magnets is briefly reviewed, beginning with the derivation of a rotationally invariant mean-field theory. The inclusion of Gaussian fluctuations is discussed in some detail for a general (non-Bravais) lattice, extending available results for simple lattices. Numerical results are presented for the ground-state energy of the Shastry-Sutherland model, and possible future refinements of the method are outlined.
Keywords
Cite
@article{arxiv.cond-mat/0106630,
title = {Schwinger-boson calculation for a frustrated antiferromagnet},
author = {Michael J. Quist},
journal= {arXiv preprint arXiv:cond-mat/0106630},
year = {2009}
}
Comments
5 pages, 3 figures