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arXiv · 2008.11599

Exact Plaquette-Ordered Ground States with Exact Edge States of the Generalized Hubbard Model in Corner Sharing Lattices

Naoto Nakatsuji·Satoshi Nishimoto·Masaaki Nakamura
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Abstract

We discuss exact plaquette-ordered ground states of the generalized Hubbard model based on the projection operator method for several corner sharing lattices: Kagome, checkerboard, and pyrochlore lattices. The obtained exact ground states are interpreted as Néel ordered states on the plaquette-located electrons. We demonstrate that these models also have exact edge states. We also calculate the entanglement entropy exactly in these systems.

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Naoto Nakatsuji, Satoshi Nishimoto, Masaaki Nakamura. 2020-08-25. Exact Plaquette-Ordered Ground States with Exact Edge States of the Generalized Hubbard Model in Corner Sharing Lattices. https://arxiv.org/abs/2008.11599

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