Functional integrals in problems involving the kinetics of electrons in a strong field

V. M. Fomin


Abstract: The generating functionals for the correlation functions of the coordinates of an electron interacting with boson fields are calculated in a functional integration representation by introducing a parabolic phase in the presence of variable external fields. Criteria of weak nonparabolicity of the phase of the influence of an equilibrium ensemble of boson fields in the electron density matrix are found.

Received: 25.09.1979

 English version: Theoretical and Mathematical Physics, 1981, 49:1, 915–925

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