title: Nematic order in a degenerate Hubbard model with spin-orbit coupling.
abstract: Using Bogoliubov's inequality we rigorously show that the multiorbital Hubbard model with narrow bands, even in the presence of spin-orbit coupling, does not exhibit long-range nematic order, in low dimensions. This result holds at any finite temperature for both repulsive and attractive Coulomb interactions, with and without spin-orbit coupling.
authors.affiliation: Dipartimento di Fisica E R Caianiello, Università di Salerno, I-84084 Fisciano (Salerno), Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Guarnaccia
authors.forename: Canio
authors.initials: C
authors.lastname: Noce