6 citations · 12 across the 5 of their papers we have counts for
5 papers
Review of the foundations of time-dependent density-functional theory (TDDFT)
Jochen Schirmer
Time-dependent density-functional theory (TDDFT) is deemed to be a formally rigorous way of dealing with the time-evolution of a many-electron system at the level of electron densi…
Non-interacting particle systems in the bi-orthogonal and unitary coupled-cluster description
Jochen Schirmer
Adapting a veritable many-body method to a system of non-interacting particles (NIP), while being trivial from a physical point of view, can be of interest with regard to methodolo…
The electron propagator for non-interacting particles: An alternative approach to quasi-degenerate perturbation theory (QDPT)
Jochen Schirmer
This article presents an alternative formulation of quasi-degenerate perturbation theory (QDPT). The development results by simplifying established many-body (MB) techniques to sys…
Runge-Gross action-integral functional re-examined
J. Schirmer
The density-based action-integral functional introduced by Runge and Gross [Phys. Rev. Lett. 52, 997(1984)] in their foundation of time-dependent density-functional theory (TDDFT)…
Modifying the variational principle in the action integral functional derivation of time-dependent density functional theory
J. Schirmer
According to a recent paper by G. Vignale [Phys. Rev. A 77, 062511 (2008), arXiv:0803.2727], the problems arising in the original derivation of time-dependent density functional th…