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Quadratic electronic polarizability of the interacting electron gas
Author(s) -
Paasch G.,
Rennert P.
Publication year - 1977
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.2220830217
Subject(s) - polarizability , quadratic equation , electron , fermi gas , physics , point (geometry) , function (biology) , perturbation theory (quantum mechanics) , quantum mechanics , point particle , quadratic function , quantum electrodynamics , mathematics , molecule , geometry , evolutionary biology , biology
The quadratic electronic polarizability of the interacting electron gas is calculated with a self‐consistent method. It can be expressed by the dielectric function and by the quadratic response function of non‐interacting electrons. It is shown that this result is correct in the sense of many‐body perturbation theory within the RPA. As the simplest application the asymptotic behaviour of the total potential is considered which is caused by an additional point charge in the electron gas.