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Theory of an Adiabatic Potential of Simple Metals. I. Exchange and Correlation Effects of Electrons
Author(s) -
Zarochentsev E. V.,
Teplov S. V.
Publication year - 1982
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221130126
Subject(s) - pseudopotential , electron , adiabatic process , physics , vertex (graph theory) , quantum mechanics , perturbation theory (quantum mechanics) , adiabatic theorem , electronic correlation , amplitude , fermi gamma ray space telescope , quantum electrodynamics , mathematics , graph , combinatorics
A method of irreducible vertex functions for the description of many‐electron interaction is introduced allowing the exact evaluation of the electron—electron interaction in every series term of the perturbation theory in pseudopotential by which the electron part of the adiabatic potential is presented. The equations for fully many‐particle amplitudes are obtained. Fully many‐particle amplitudes are found assuming that the irreducible vertex functions depend only on the momenta q transfered to electrons scattered from the pseudopotential. Limiting values (with q → O ) of irreducible vertex functions are derived using exact relations of the Fermi‐liquid theory.