209 citations · 1.7k across the 59 of their papers we have counts for
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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…
The physical origin of the electron-phonon vertex correction
C. Grimaldi, L. Pietronero, M. Scattoni
The electron-phonon vertex correction has a complex structure both in momentum and frequency. We explain this structure on the basis of physical considerations and we show how the…
Nonadiabatic pairing effects for tight-binding electrons interacting with phonons
A. Perali, C. Grimaldi, L. Pietronero
The nonadiabatic electron-phonon corrections for the superconducting pairing are investigated for a specific tight-binding model corresponding to a 2d square lattice. This permits…
Role of the superconducting gap opening on vertex corrections
E. Cappelluti, C. Grimaldi, L. Pietronero
The nonadiabatic effects due to the breakdown of Migdal's theorem in high- superconductors are strongly affected by the opening of the superconducting gap. Here we report how…