16 citations · 26 across the 4 of their papers we have counts for
4 papers
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…
Topology Induced Macroscopic Quantum Coherence in Josephson Junction Networks
G. Giusiano, F. P. Mancini, P. Sodano +1
We argue that Josephson junction networks may be engineered to allow for the emergence of new and robust quantum coherent states. We provide a rather intuitive argument showing how…
On the Phase Diagram of Josephson Junction Arrays with Offset Charges
F. P. Mancini, P. Sodano, A. Trombettoni
We study the effects of external offset charges on the phase diagram of Josephson junction arrays. Using the path integral approach, we provide a pedagogical derivation of the equa…
Effects of two-site composite excitations in the Hubbard model
A. Avella, F. Mancini, S. Odashima
The electronic states of the Hubbard model are investigated by use of the Composite Operator Method. In addition to the Hubbard operators, two other operators related with two-site…