General structure of excitations in many-body systems: Applications to atoms
- 1 November 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 12 (5) , 1739-1750
- https://doi.org/10.1103/physreva.12.1739
Abstract
It is found that a general description of excitations in terms of self-energy effects such as relaxation, correlation, and electron-hole interactions, is possible. A formalism is developed to analyze the contributions to each of these effects, and criteria are established which, if met, allow a much simpler description of the excitation processes than with the general formalism. These procedures are tested by calculations on atomic Be and Ne, and the structure of each of the processes contributing is studied.Keywords
This publication has 23 references indexed in Scilit:
- Calculation of excitation energies of atomic systems using the operatorPhysical Review A, 1974
- Dielectric Response in the Wannier Representation: Application to the Optical Spectrum of DiamondPhysical Review Letters, 1974
- Hartree-Fock calculations for crystalline Ne and LiFPhysical Review B, 1974
- Green's function approach to the direct perturbation calculation of the excitation energies of closed shell fermion systemsThe Journal of Chemical Physics, 1974
- Microscopic Theory of Dielectric Screening and Lattice Dynamics in the Wannier Representation. I. TheoryPhysical Review B, 1973
- Absorption of Soft X Rays by Insulators with a Forbidden Exciton TransitionPhysical Review Letters, 1973
- Simplified Hartree-Fock Method for Calculating Ground-State Properties and Energy-Band StructuresPhysical Review B, 1973
- Application of the equations-of-motion method to the excited states of N2, CO, and C2H4The Journal of Chemical Physics, 1973
- Higher Random-Phase Approximation as an Approximation to the Equations of MotionPhysical Review A, 1970
- Localized Orbitals in Polyatomic SystemsPhysica Status Solidi (b), 1969