Exact solution of the extended Hubbard model in the atomic limit on the Bethe Lattice

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dc.creatorMancini, F.
dc.creatorMancini, F. P.
dc.creatorNaddeo, A.
dc.date2007-11-02
dc.date.accessioned2026-07-07T10:01:08Z
dc.date.available2026-07-07T10:01:08Z
dc.descriptionWe study the phase diagram at finite temperature of a system of Fermi particles on the sites of the Bethe lattice with coordination number z and interacting through onsite U and nearest-neighbor V interactions. This is a physical realization of the extended Hubbard model in the atomic limit. By using the equations of motion method, we exactly solve the model. For an attractive intersite potential, we find, at half filling, a phase transition towards a broken particle-hole symmetry state. The critical temperature, as a function of the relevant parameters, has a re-entrant behavior as already observed in the equivalent spin-1 Ising model on the Bethe lattice.
dc.description9 pages,1 figure; presented at ESM '07
dc.identifierhttps://arxiv.org/abs/0711.0318
dc.identifierhttp://arxiv.org/abs/0711.0318
dc.identifierJ. Opt. Adv. Mat. 10,1694 (2008)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/168538
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleExact solution of the extended Hubbard model in the atomic limit on the Bethe Lattice
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