title: Electron correlation via frozen Gaussian dynamics.
abstract: We investigate the accuracy and efficiency of the semiclassical frozen Gaussian method in describing electron dynamics in real time. Model systems of two soft-Coulomb-interacting electrons are used to study correlated dynamics under non-perturbative electric fields, as well as the excitation spectrum. The results show that a recently proposed method that combines exact-exchange with semiclassical correlation to propagate the one-body density-matrix holds promise for electron dynamics in many situations that either wavefunction or density-functional methods have difficulty describing. The results also however point out challenges in such a method that need to be addressed before it can become widely applicable.
authors.affiliation: Department of Physics and Astronomy, Hunter College and the City University of New York, 695 Park Avenue, New York, New York 10065, USA. pelliott@hunter.cuny.edu
authors.forename: Peter
authors.initials: P
authors.lastname: Elliott
authors.forename: Neepa T
authors.initials: NT
authors.lastname: Maitra