Dynamical mean-field theory of transport of small polarons.

  title={Dynamical mean-field theory of transport of small polarons.},
  author={S Fratini and S Ciuchi},
  journal={Physical review letters},
  volume={91 25},
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 nonperturbative nature of the approach allows us to study the crossover from classical activated motion at high temperatures to coherent motion at low temperatures. Large quantitative… CONTINUE READING