169 citations · 614 across the 8 of their papers we have counts for
8 papers
Levels of self-consistency in the GW approximation
Adrian Stan, Nils Erik Dahlen, Robert van Leeuwen
We perform calculations on atoms and diatomic molecules at different levels of self-consistency and investigate the effects of self-consistency on total energies, ionization p…
Time-propagation of the Kadanoff-Baym equations for inhomogeneous systems
Adrian Stan, Nils Erik Dahlen, Robert van Leeuwen
We have developed a time propagation scheme for the Kadanoff-Baym equations for general inhomogeneous systems. These equations describe the time evolution of the nonequilibrium Gre…
Nonequilibrium Green's functions approach to strongly correlated few-electron quantum dots
K. Balzer, M. Bonitz, R. van Leeuwen +2
The effect of electron-electron scattering on the equilibrium properties of few-electron quantum dots is investigated by means of nonequilibrium Green's functions theory. The groun…
Solving the Kadanoff-Baym equations for inhomogenous systems: Application to atoms and molecules
Nils Erik Dahlen, Robert van Leeuwen
We have implemented time-propagation of the non-equilibrium Green function for atoms and molecules, by solving the Kadanoff-Baym equations within a conserving self-energy approxima…
Fully self-consistent GW calculations for atoms and molecules
Adrian Stan, Nils Erik Dahlen, Robert van Leeuwen
We solve the Dyson equation for atoms and diatomic molecules within the GW approximation, in order to elucidate the effects of self-consistency on the total energies and ionization…
Total energies from variational functionals of the Green function and the renormalized four-point vertex
Robert van Leeuwen, Nils Erik Dahlen, Adrian Stan
We derive variational expressions for the grand potential or action in terms of the many-body Green function which describes the propagation of particles and the renormalized f…