99 citations · 185 across the 12 of their papers we have counts for
22 papers
The Hubbard model within the equations of motion approach
F. Mancini, A. Avella
The Hubbard model has a special role in Condensed Matter Theory as it is considered as the simplest Hamiltonian model one can write in order to describe anomalous physical properti…
New perspectives on the Ising model
Ferdinando Mancini
The Ising model, in presence of an external magnetic field, is isomorphic to a model of localized interacting particles satisfying the Fermi statistics. By using this isomorphism,…
A generating functional approach to the Hubbard model
Yu. A. Izyumov, N. I. Chaschin, D. S. Alexeev +1
The method of generating functional is generalized to the case of strongly correlated systems, and applied to the Hubbard model. For the electronic Green's function constructed for…
Fermionic systems with charge correlations
Ferdinando Mancini
In this paper, we show that a system of localized particles, satisfying the Fermi statistics and subject to finite-range interactions, can be exactly solved in any dimension. In fa…
4-pole analysis of the two-dimensional Hubbard model
Satoru Odashima, Adolfo Avella, Ferdinando Mancini
The electronic states of the two-dimensional Hubbard model are investigated by means of a 4-pole approximation within the Composite Operator Method. In addition to the conventional…
The Hubbard model with intersite interaction within the Composite Operator Method
Adolfo Avella, Ferdinando Mancini
We study the one- and two- dimensional extended Hubbard model by means of the Composite Operator Method within the 2-pole approximation. The fermionic propagator is computed fully…