Model of the electron-phonon interaction and optical conductivity of Ba${}_{1-x}$K${}_x$BiO${}_3$ superconductors

R. Nourafkan, F. Marsiglio, G. Kotliar

We investigate the physical properties of the Ba${}_{1-x}$K${}_x$BiO${}_3$ compounds with a focus on the optical properties. Results from the simple Holstein model, describing a single b…