Exact ground states of extended t-J_{z} models on a square lattice

Details Exact ground states of extended t-J_{z} models on a square lattice Exact ground states of extended t-J_{z} models on a square lattice

2005-04-26

arxiv.org/abs/cond-mat/0504650v3

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 2 figures

Scientific paper

We examine special extended spin S=1/2 fermionic and hard core bosonic
t-J_{z} models and find exact ground states. Some of these models display an
exponentially large degeneracy with diagonal stripe like patterns.

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