It is shown that the effect of two-particle, two-hole excitations can be included in a self-consistent time-dependent Hartree-Fock model. Both corrected excitation energies and oscillator strengths are calculated. Especially the singlet spectrum is influenced by this perturbation.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Surfaces and Interfaces