Singlets and reflection symmetric spin systems
Mathematical Physics
2009-10-31 v1 Statistical Mechanics
math.MP
Abstract
We rigorously establish some exact properties of reflection symmetric spin systems with antiferromagnetic crossing bonds: At least one ground state has total spin zero and a positive semidefinite coefficient matrix. The crossing bonds obey an ice rule. This augments some previous results which were limited to bipartite spin systems and is of particular interest for frustrated spin systems.
Keywords
Cite
@article{arxiv.math-ph/9910037,
title = {Singlets and reflection symmetric spin systems},
author = {Elliott H. Lieb and Peter Schupp},
journal= {arXiv preprint arXiv:math-ph/9910037},
year = {2009}
}
Comments
11 pages, LaTeX 2e