Quasi-state decompositions for quantum spin systems
arXiv:cond-mat/9312012
Abstract
I discuss the concept of quasi-state decompositions for ground states and equilibrium states of quantum spin systems. Some recent results on the ground states of a class of one-dimensional quantum spin models are summarized and new work in progress is presented. I also outline some challenging open problems and conjectures.
arXiv comment18 pages, Plain TeX, 5 figures available upon request