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

Anders Rosengren; Zohar Nussinov

arxiv: cond-mat/0504650 · v3 · submitted 2005-04-26 · ❄️ cond-mat.str-el · cond-mat.supr-con

Exact ground states of extended t-J_(z) models on a square lattice

Zohar Nussinov , Anders Rosengren This is my paper

classification ❄️ cond-mat.str-el cond-mat.supr-con

keywords modelsexactextendedgroundstatesbosoniccoredegeneracy

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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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Exact ground states of extended t-J_(z) models on a square lattice

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