We prove that, below quarter filling, the ground state of the Hubbard model with an infinite-range hopping t > 0 is completely degenerate with respect to the total spin.
An exact result on ferromagnetism in the Hubbard model with an infinite-range hopping
PIERI, Pierbiagio
1997-01-01
Abstract
We prove that, below quarter filling, the ground state of the Hubbard model with an infinite-range hopping t > 0 is completely degenerate with respect to the total spin.File in questo prodotto:
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