Many-body theory of electron scattering by excited atomic targets: Fundamental formulas

1993 ◽  
Vol 48 (4) ◽  
pp. 2811-2827 ◽  
Author(s):  
G. Csanak ◽  
D. C. Cartwright ◽  
Fernando J. da Paixão
Keyword(s):  
Electron Scattering ◽  
Many Body ◽  
Many Body Theory ◽  
Body Theory

A comparison of approximations for the elastic electron–electron scattering amplitude in jellium

1982 ◽  
Vol 60 (7) ◽  
pp. 1016-1028 ◽  
Author(s):  
A. H. MacDonald ◽  
D. J. W. Geldart
Keyword(s):  
Electron Scattering ◽  
Density Functional ◽  
Scattering Amplitude ◽  
Magnetic Interaction ◽  
Exact Result ◽  
Many Body ◽  
Many Body Theory ◽  
Expansion Technique ◽  
Low Energy Electrons ◽  
Body Theory

An approximation for the electron–electron scattering amplitude, Γ, in jellium, motivated by comparing formal many-body theory and density-functional theory expressions for the jellium response function, is suggested. The approximation is compared with previously suggested approximations for Γ, using an exact result for the forward scattering limit to assess the reliability of each approximation. It is pointed out that the magnetic interaction contribution to Γ becomes dominant at low density in jellium and that this contribution is absent in most commonly adopted approximations. Mean free paths for low energy electrons in jellium-like metals have been calculated for various approximations to Γ and the magnetic-interaction effect is identified as being responsible for a previously noted discrepancy between Thomas–Fermi-like and more sophisticated approximations to Γ. A systematic method, using the parquet expansion technique, has been proposed for antisymmetrizing the density-functional based approximation to Γ when necessary.

On the many-body theory of nuclear reactions

1968 ◽  
Vol 111 (1) ◽  
pp. 392-416 ◽  
Author(s):  
K DIETRICH ◽  
K HARA
Keyword(s):  
Nuclear Reactions ◽  
Many Body ◽  
Many Body Theory ◽  
The Many ◽  
Body Theory

MANY-BODY THEORY FOR HYPERFINE EFFECTS IN ATOMS AND MOLECULES

1970 ◽  
Vol 31 (C4) ◽  
pp. C4-99-C4-104
Author(s):  
T. P. DAS ◽  
C. M. DUTTA ◽  
N. C. DUTTA
Keyword(s):  
Many Body ◽  
Atoms And Molecules ◽  
Many Body Theory ◽  
Body Theory

Test of closure approximations in equilibrium classical many‐body theory

1988 ◽  
Vol 88 (12) ◽  
pp. 7791-7798 ◽  
Author(s):  
Leslie J. Root ◽  
Frank H. Stillinger ◽  
Gary E. Washington
Keyword(s):  
Many Body ◽  
Many Body Theory ◽  
Closure Approximations ◽  
Body Theory
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