Title
Beyond RPA : dynamical exchange effects and the two-dimensional electron gasBeyond RPA : dynamical exchange effects and the two-dimensional electron gas
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Department of Physics
Theory of quantum systems and complex systems
Publication type
conferenceObject
Publication
New York,
Subject
Physics
Source (journal)
AIP conference proceedings / American Institute of Physics. - New York
Source (book)
8th Training Course in the Physics of Correlated Electron Systems and, High-Tc Superconductors, OCT 06-17, 2003, Salerno, ITALY
Volume/pages
715(2004), p. 205-214
ISSN
0094-243X
ISBN
0-7354-0194-2
ISI
000223848400004
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Dynamic exchange interactions can be introduced in the dielectric function via a dynamic local field factor. We study the effects of this inclusion on the energy-loss function of a two-dimensional electron gas, using the dynamic local field factor that we derived recently via the dynamical exchange decoupling method. The results are compared with the dielectric function in the Random Phase Approximation, showing a drastic influence of the dynamic exchange interactions.
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