Path-integral approach to single-particle excitation in Coulomb systems

1998 ◽  
Vol 57 (10) ◽  
pp. 5772-5777 ◽  
Author(s):  
V. Sa-yakanit ◽  
V. D. Lakhno ◽  
K. Hass
Keyword(s):  
Path Integral ◽  
Single Particle ◽  
Coulomb Systems ◽  
Integral Approach ◽  
Path Integral Approach ◽  
Single Particle Excitation

Path Integral Calculations of Particle Self-Energy and Effective Mass in Coulomb Systems

1997 ◽  
Vol 11 (04) ◽  
pp. 129-138 ◽  
Author(s):  
V. Sa-Yakanit ◽  
V. D. Lakhno ◽  
Klaus Haß
Keyword(s):  
Effective Mass ◽  
Path Integral ◽  
State Energy ◽  
Coulomb Systems ◽  
Integral Approach ◽  
Coupling Region ◽  
Self Energy ◽  
Consistent Approximation ◽  
A Value ◽  
Wide Range

The generalized path integral approach is applied to calculate the ground state energy and the effective mass of an electron-plasmon interacting system for a wide range of densities. It is shown that in the self-consistent approximation an abrupt transition between the weak coupling and the strong coupling region of interaction exists. The transition occurs at low electron densities according to a value of 418 for rs, when Wigner crystallization is possible. For densities of real metals, the electron bandwidth is calculated and a comparison with experimental results is given.

The Path Integral Approach for the Nuclear Collective Motion

1983 ◽  
Vol 27 (2) ◽  
pp. 72-76 ◽  
Author(s):  
D Galetti ◽  
S S Mizrahi ◽  
B M Pimentel
Keyword(s):  
Path Integral ◽  
Collective Motion ◽  
Integral Approach ◽  
Path Integral Approach
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