Dyson Orbitals, Quasi-Particle effects and Compton scattering

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dc.creatorBarbiellini, B.
dc.creatorBansil, A.
dc.date2004-05-08
dc.date.accessioned2026-07-07T08:35:33Z
dc.date.available2026-07-07T08:35:33Z
dc.descriptionDyson orbitals play an important role in understanding quasi-particle effects in the correlated ground state of a many-particle system and are relevant for describing the Compton scattering cross section beyond the frameworks of the impulse approximation (IA) and the independent particle model (IPM). Here we discuss corrections to the Kohn-Sham energies due to quasi-particle effects in terms of Dyson orbitals and obtain a relatively simple local form of the exchange-correlation energy. Illustrative examples are presented to show the usefulness of our scheme.
dc.description1 figure, 4 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0405167
dc.identifierhttp://arxiv.org/abs/cond-mat/0405167
dc.identifierJ. Phys. Chem. Solids 65, 2031 (2004)
dc.identifierdoi:10.1016/j.jpcs.2004.08.016
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/139784
dc.subjectMaterials Science
dc.subjectStrongly Correlated Electrons
dc.titleDyson Orbitals, Quasi-Particle effects and Compton scattering
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