3 papers
cond-mat.str-el2003
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…
cond-mat.str-el2000
Optical absorption from a non degenerate polaron gas
S. Fratini F. de Pasquale S. Ciuchi
We apply the Dynamical Mean Field Theory to calculate the low-density limit of the optical conductivity in the Holstein model. This non perturbative treatment allows to span contin…
cond-mat.str-el1998
The Small Polaron Crossover: Role of Dimensionality
M. Capone, S. Ciuchi, C. Grimaldi
The crossover from quasi free electron to small polaron in the Holstein model for a single electron is studied by means of both exact and self-consistent calculations in one dimens…