Complete spectrum of the infinite-U Hubbard ring using group theory.


We present a full analytical solution of the multiconfigurational strongly correlated mixed-valence problem corresponding to the N-Hubbard ring filled with N-1 electrons, and infinite on-site repulsion. While the eigenvalues and the eigenstates of the model are known already, analytical determination of their degeneracy is presented here for the first time… (More)
DOI: 10.1063/1.4875039

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