Time-dependent density-matrix functional theory for biexcitonic phenomena
arXiv:1008.1532 · doi:10.1103/PhysRevB.82.205208
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 Schrödinger 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.
References in corpus (5)
- Time-dependent density-functional approach for exciton binding energies
- Time-dependent density-functional theory for ultrafast interband excitations
- Many-body interaction in semiconductors probed with 2D Fourier spectroscopy
- Entangling photons by means of the nonlinear response of quantum wells to an ultrashort pulse
- Non-perturbative phenomena in semiconductor four-wave mixing spectra