scholarly journals Density response of the warm dense electron gas beyond linear response theory: Excitation of harmonics

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Tobias Dornheim ◽  
Maximilian Böhme ◽  
Zhandos A. Moldabekov ◽  
Jan Vorberger ◽  
Michael Bonitz
Keyword(s):  
Linear Response ◽  
Electron Gas ◽  
Linear Response Theory ◽  
Response Theory ◽  
Density Response

Self-consistent nonlocal linear-response theory of a relativistic electron gas

2003 ◽  
Vol 67 (11) ◽  
Author(s):  
F. E. Leys ◽  
N. H. March ◽  
G. G. N. Angilella ◽  
D. Lamoen
Keyword(s):  
Relativistic Electron ◽  
Linear Response ◽  
Electron Gas ◽  
Linear Response Theory ◽  
Response Theory ◽  
Self Consistent

scholarly journals A Generalised Linear Response Theory applied to the Dielectric Function of Coulomb Systems

2000 ◽  
Vol 53 (1) ◽  
pp. 133 ◽  
Author(s):  
H. Reinholz
Keyword(s):  
Dielectric Function ◽  
Linear Response ◽  
Electron Gas ◽  
Three Dimensional ◽  
Coulomb Systems ◽  
Linear Response Theory ◽  
Quantum Systems ◽  
Response Theory ◽  
Long Wavelength ◽  
Wave Numbers

A generalised linear response theory is used to derive the dielectric function at arbitrary wave numbers k and frequencies w for interacting quantum systems. The connection to thermodynamic Green functions allows the systematic perturbative treatment going beyond RPA and treating local field corrections as well as the inclusion of collisions on the same footing. Emphasis will be on the demonstration of the formalism. Results will be presented for the three-dimensional as well as two-dimensional case of an interacting electron gas. In the long-wavelength limit, a Drude-type expression with frequency dependent relaxation time is given bridging the theories of dielectric function and electrical conductivity.

Linear Response Theory for a Degenerate Electron Gas in a Strong Magnetic Field

1969 ◽  
Vol 177 (3) ◽  
pp. 1019-1036 ◽  
Author(s):  
Michael P. Greene ◽  
Hyung Joon Lee ◽  
J. J. Quinn ◽  
Sergio Rodriguez
Keyword(s):  
Magnetic Field ◽  
Strong Magnetic Field ◽  
Linear Response ◽  
Electron Gas ◽  
Linear Response Theory ◽  
Degenerate Electron ◽  
Response Theory ◽  
Degenerate Electron Gas
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