89 citations · 109 across the 2 of their papers we have counts for
2 papers
cond-mat.stat-mech2005★ 89 cited
Conserving Approximations in Time-Dependent Density Functional Theory
Ulf von Barth, Nils Erik Dahlen, Robert van Leeuwen +1
In the present work we propose a theory for obtaining successively better approximations to the linear response functions of time-dependent density or current-density functional th…
cond-mat.mes-hall2005★ 20 cited
Introduction to the Keldysh formalism and applications to time-dependent density-functional theory
Robert van Leeuwen, Nils Erik Dahlen, Gianluca Stefanucci +2
This paper gives an introduction to the Keldysh formalism, with emphasis on its usefulness in time-dependent density functional theory. In the first part we introduce the Keldysh c…