Time-dependent density-matrix functional theory for biexcitonic phenomena
Materials Science
2015-05-19 v1
Abstract
We formulate a time-dependent density-matrix functional theory (TDDMFT) approach for higher-order correlation effects like biexcitons in optical processes in solids based on the reduced two-particle density-matrix formalism within the normal orbital representation. A TDDMFT version of the Schr\"odinger equation for biexcitons in terms of one- and two-body reduced density matrices is derived, which leads to finite biexcitonic binding energies already with an adiabatic approximation. Biexcitonic binding energies for several bulk semiconductors are calculated using a contact biexciton model.
Cite
@article{arxiv.1008.1532,
title = {Time-dependent density-matrix functional theory for biexcitonic phenomena},
author = {Volodymyr Turkowski and Carsten A. Ullrich and Talat S. Rahman and Michael N. Leuenberger},
journal= {arXiv preprint arXiv:1008.1532},
year = {2015}
}