14 citations · 55 across the 6 of their papers we have counts for
7 papers
Exact solution of the 1D Hubbard model with NN and NNN interactions in the narrow-band limit
Ferdinando Mancini, Evgeny Plekhanov, Gerardo Sica
We present the exact solution, obtained by means of the Transfer Matrix (TM) method, of the 1D Hubbard model with nearest-neighbor (NN) and next-nearest-neighbor (NNN) Coulomb inte…
Exact solution of the 1D Hubbard model in the atomic limit with inter-site magnetic coupling
F. Mancini, E. Plekhanov, G. Sica
In this paper we present for the first time the exact solution in the narrow-band limit of the 1D extended Hubbard model with nearest-neighbour spin-spin interactions described by…
Pseudogap in high-temperature superconductors from realistic Fröhlich and Coulomb interactions
G. Sica, J. H. Samson, A. S. Alexandrov
It has been recently shown that the competition between unscreened Coulomb and Fröhlich electron-phonon interactions can be described in terms of a short-range spin exchange …
High temperature superconductivity from realistic long-range Coulomb and Fröhlich interactions
A. S. Alexandrov, J. H. Samson, G. Sica
In the last years ample experimental evidence has shown that charge carriers in high-temperature superconductors are strongly correlated but also coupled with lattice vibrations (p…
Superlight small bipolarons from realistic long-range Coulomb and Fröhlich interactions
A. S. Alexandrov, J. H. Samson, G. Sica
We report analytical and numerical results on the two-particle states of the polaronic t-Jp model derived recently with realistic Coulomb and electron-phonon (Frohlich) interaction…
Spin and charge orderings in the atomic limit of the U-V-J model
Ferdinando Mancini, Evgeny Plekhanov, Gerardo Sica
In this paper we study a generalization of the 1D Hubbard model by considering density-density and Ising-type spin-spin nearest neighbor (NN) interactions, parameterized by and…