Dear Ran, If you are talking about the transmission of electrons in the presence of Phonons, you can express the Green's function in a self consistent way in a certain approximation.
I suggest for you the following reference: A. Cresti, G. Grosso, and G. Pastori Parravicini, J. Phys.: Condens. Matter 18, 10059 (2005). I hope this helps Adel On Thu, Jul 9, 2020 at 2:22 PM Ran Mutc <mutc1r2...@gmail.com> wrote: > Dear Kwant developers, > > I wonder whether it is possible to calculate phonon transmission via NEGF > formalism in Kwant. > > For example within the force constant model, is it possible to construct > the dynamical matrix and calculate phonon self energies via surface Green's > functions? > > Or do you recommend any other way to implement the phonon transmission in > Kwant? > > Best, > Ran > -- Abbout Adel
