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On the single-particle spectrum of an interacting electron gas

Hedin, Lars LU ; Lundqvist, Bengt I. and Lundqvist, Stig O. (1967) In [Host publication title missing] 1. p.237-237
Abstract
n the many-body theory of conduction electrons in a metal the single-particle spectrum is described not simply by the energy versus momentum relation as in band theory but by a function that describes the actual shape of the spectrum for a given momentum and has an appreciable spread in energy. Calculations of the spectral strength function for electrons in a uniform electron gas are described, where, besides the usual quasi-particle peak and a broad background, a new peak of appreciable strength appears for small momenta. The new excitation corresponds to a coupled mode of an electron and real plasmons. It has a strong effect on the energy distribution of electrons in the system. The effects should show up only in certain types of... (More)
n the many-body theory of conduction electrons in a metal the single-particle spectrum is described not simply by the energy versus momentum relation as in band theory but by a function that describes the actual shape of the spectrum for a given momentum and has an appreciable spread in energy. Calculations of the spectral strength function for electrons in a uniform electron gas are described, where, besides the usual quasi-particle peak and a broad background, a new peak of appreciable strength appears for small momenta. The new excitation corresponds to a coupled mode of an electron and real plasmons. It has a strong effect on the energy distribution of electrons in the system. The effects should show up only in certain types of experiments that depend on the energy spectrum in the region where the new mode occurs. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
[Host publication title missing]
volume
1
pages
237 - 237
DOI
10.1002/qua.560010688
language
English
LU publication?
yes
id
e548feff-9d1d-4cb5-9a11-88d9bb898760 (old id 8777968)
date added to LUP
2016-03-04 09:23:08
date last changed
2016-04-16 11:22:49
@misc{e548feff-9d1d-4cb5-9a11-88d9bb898760,
  abstract     = {n the many-body theory of conduction electrons in a metal the single-particle spectrum is described not simply by the energy versus momentum relation as in band theory but by a function that describes the actual shape of the spectrum for a given momentum and has an appreciable spread in energy. Calculations of the spectral strength function for electrons in a uniform electron gas are described, where, besides the usual quasi-particle peak and a broad background, a new peak of appreciable strength appears for small momenta. The new excitation corresponds to a coupled mode of an electron and real plasmons. It has a strong effect on the energy distribution of electrons in the system. The effects should show up only in certain types of experiments that depend on the energy spectrum in the region where the new mode occurs.},
  author       = {Hedin, Lars and Lundqvist, Bengt I. and Lundqvist, Stig O.},
  language     = {eng},
  pages        = {237--237},
  series       = {[Host publication title missing]},
  title        = {On the single-particle spectrum of an interacting electron gas},
  url          = {http://dx.doi.org/10.1002/qua.560010688},
  volume       = {1},
  year         = {1967},
}