Electronic excitations lie at the origin of most of the commonly measured spectra. However,
the first-principles computation of excited states requires a larger effort than ground-state …

A density-functional formalism comparable to the theory of Hohenberg, Kohn and Sham is
developed for electronic systems subject to time-dependent external fields. The formalism …

Collective electronic excitations at metal surfaces are well known to play a key role in a wide
spectrum of science, ranging from physics and materials science to biology. Here we focus …

The first Nato Advanced Studies Institute entirely devoted to density functional theory was
held in Portugal in September 1983. The proceedings of this School, publis hed in early …

We propose a memory form of exchange-correlation potential v XC (r, t) for time-dependent
interacting many-particle systems. Unlike previous memory-XC potentials, our v XC is not …

Time-dependent density-functional theory (TDFT) provides a way of calculating, in principle
exactly, the linear response of interacting many-electron systems, and thus allows one to …

Time-dependent density-functional theory in the adiabatic approximation has been very
successful for calculating excitation energies in molecular systems. This paper studies …

Using monolayer graphene as a model system for a purely two-dimensional (2D) electron
gas, we show by energy electron loss spectroscopy, highly resolved both in energy and …

We use linearized time-dependent (current) density-functional theory to study collective
transitions between the two lowest subbands in G a A s/A lx Ga 1− x As quantum wells. We …

The static Kohn-Sham theory of many-particle systems is basically unsuitable for the
description of time-dependent electronic phenomena.(The few exceptions rely on the …