title: Time-dependent density-functional theory beyond the local-density approximation.
abstract: Approximations for the ground-state exchange-correlation potential of density-functional theory have reached a high level of sophistication. By contrast, time- or frequency-dependent exchange-correlation potentials are still being treated in a local approximation. Here we propose a novel approximation scheme, which effectively brings the power of the generalized gradient approximation (GGA) and meta-GGA to time-dependent density-functional theory. The theory should allow a more accurate treatment of strongly inhomogeneous electronic systems (e.g. molecular junctions) while remaining essentially exact for slowly varying densities and slowly varying external potentials.
authors.affiliation: Department of Physics, University of Missouri-Columbia, Columbia, Missouri 65211, USA.
authors.forename: Jianmin
authors.initials: J
authors.lastname: Tao
authors.forename: Giovanni
authors.initials: G
authors.lastname: Vignale