Abstract
The causality principle formulated in the paper is offered as a boundary condition for the Schwinger equation. This approach allows study of, in particular, the dynamics of closed, finite systems. An approximate method for solving the equation is offered. A generalization of the Boltzmann equation is obtained for the presence of particle “attenuation.”
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 75–80, April, 1973.
The author is very grateful to V. L. Bonch-Bruevich for discussion of the work.
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Veklenko, B.A. Green's function method for nonequilibrium systems. Soviet Physics Journal 16, 503–507 (1973). https://doi.org/10.1007/BF00890835
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DOI: https://doi.org/10.1007/BF00890835