27 citations · 27 across the 4 of their papers we have counts for
5 papers
Polaronic features in the optical properties of the Holstein-t-J model
E. Cappelluti, S. Ciuchi, S. Fratini
We derive the exact solution for the optical conductivity of one hole in the Holstein-t-J model in the framework of dynamical mean-field theory (DMFT). We investigate the ma…
Incipient quantum melting of the one-dimensional Wigner lattice
S. Fratini, B. Valenzuela, D. Baeriswyl
A one--dimensional tight--binding model of electrons with long--range Coulomb interactions is studied in the limit where double site occupancy is forbidden and the Coulomb coupling…
Dynamical mean field theory of small polaron transport
S. Fratini, S. Ciuchi
We present a unified view of the transport properties of small-polarons in the Holstein model at low carrier densities, based on the Dynamical Mean Field Theory. The nonperturbativ…
Variational Wave Function for Generalized Wigner Lattices in One Dimension
S. Fratini, B. Valenzuela, D. Baeriswyl
We study a system of electrons on a one-dimensional lattice, interacting through the long range Coulomb forces, by means of a variational technique which is the strong coupling ana…
Polarization catastrophe in doped cuprates and metal-ammonia solutions: an analogy
P. Quemerais, J. -L. Raimbault, S. Fratini
On doping polar dielectrics, such as the cuprates or liquid ammonia, the long range polarization leads to the formation of bound states (polarons or solvated electrons). However, t…