Unified view on linear response of interacting identical and distinguishable particles from multiconfigurational time-dependent Hartree methods

• Verfasst von: Alon, Ofir E. [VerfasserIn]
• Verfasst von: Streltsov, Alexej Iwanowitsch [VerfasserIn]
• Verfasst von: Cederbaum, Lorenz S. [VerfasserIn]
• Titel: Unified view on linear response of interacting identical and distinguishable particles from multiconfigurational time-dependent Hartree methods
• Verf.angabe: Ofir E. Alon, Alexej I. Streltsov, and Lorenz S. Cederbaum
• E-Jahr: 2014
• Jahr: 16 January 2014
• Umfang: 22 S.
• Fussnoten: Gesehen am 13.10.2020
• Titel Quelle: Enthalten in: The journal of chemical physics
• Ort Quelle: Melville, NY : American Institute of Physics, 1933
• Jahr Quelle: 2014
• Band/Heft Quelle: 140(2014,3) Artikel-Nummer 034108, 22 Seiten
• ISSN Quelle: 1089-7690
• DOI: doi:10.1063/1.4860970
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1735421057

Abstract

A unified view on linear response of interacting systems utilizing multiconfigurational time-dependent Hartree methods is presented. The cases of one-particle and two-particle response operators for identical particles and up to all-system response operators for distinguishable degrees-of-freedom are considered. The working equations for systems of identical bosons and identical fermions, as well for systems of distinguishable particles are explicitly derived. These linear-response theories - applicable for discrete excitation spectra - provide numerically exact excitation energies and system's properties, when numerical convergence is achieved in the calculations.