Ferromagnetism in the Hubbard model with an infinite-range hopping

Abstract

We prove, as recently conjectured, that the ground state of the Hubbard Hamiltonian with an infinite-range hopping, when the number of electrons $N_e=N+1$ ($N$ being the number of sites), is ferromagnetic fully polarized.

6 pages, LaTex, no figures

References in corpus (4)

• Ferromagnetism in the Hubbard Model-- Examples from Models with Degenerate Single-Electron Ground States
• Ferromagnetism in Hubbard Models
• The Hubbard model on a complete graph: Exact Analytical results
• Ferromagnetic ground states of the Hubbard model on a complete graph