arXiv:1005.1341 · Physical Review Letters
Semiclassical Electron Correlation in Density-Matrix Time Propagation
Arun K. Rajam, Izabela Raczkowska, Neepa T. Maitra
Abstract
Lack of memory (locality in time) is a major limitation of almost all present time-dependent density-functional approximations. By using semiclassical dynamics to compute correlation effects in the time propagation of the density matrix, we incorporate memory, including initial-state dependence, as well as changing occupation numbers, and predict more observables in strong-field applications.