N. Säkkinen, Y. Peng, H. Appel and R. van Leeuwen: Many-body Green’s function theory for electron-phonon interactions: Ground state properties of the Holstein dimer. The Journal of Chemical Physics143 (23), 234101 (2015).
N. Säkkinen, Y. Peng, H. Appel and R. van Leeuwen: Many-body Green’s function theory for electron-phonon interactions: The Kadanoff-Baym approach to spectral properties of the Holstein dimer. The Journal of Chemical Physics143 (23), 234102 (2015).
Y. Peng, L.M. Ghiringhelli and H. Appel: A quantum reactive scattering perspective on electronic nonadiabaticity. The European Physical Journal B: Condensend Matter Physics87 (7), 155 (2014).