Dispersion and line shape of plasmon satellites in one, two, and three dimensions
- Author(s): Vigil-Fowler, D
- Louie, SG
- Lischner, J
- et al.
Published Web Locationhttps://doi.org/10.1103/PhysRevB.93.235446
© 2016 American Physical Society. Using state-of-the-art many-body Green's function calculations based on the GW plus cumulant approach, we analyze the properties of plasmon satellites in the electron spectral function resulting from electron-plasmon interactions in one-, two-, and three-dimensional systems. Specifically, we show how their dispersion relation, line shape, and linewidth are related to the properties of the constituent electrons and plasmons. To gain insight into the many-body processes giving rise to the formation of plasmon satellites, we connect the GW plus cumulant approach to a many-body wave-function picture of electron-plasmon interactions and introduce the coupling-strength-weighted electron-plasmon joint density states as a powerful concept for understanding plasmon satellites.