Balance and frustration in strongly correlated itinerant electron systems: an extension of Nagaoka's theorem
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DOI: 10.1103/physrevb.96.174435
Abstract: We prove that Nagaoka's theorem, that the ground state of the large-U Hubbard model with exactly one hole is ferromagnetic, holds for any balanced Hamiltonian. We argue that, in itinerant electron systems, a balanced Hamiltonian,… read more here.
Keywords: electron systems; balance frustration; itinerant electron; frustration strongly ... See more keywords