Description of nonequilibrium processes by the Green's function method in a mixed representation
Teoretičeskaâ i matematičeskaâ fizika, Tome 24 (1975) no. 2, pp. 278-282
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Exact equations for the Green functions in mixed representation are obtained, including the operator exponents, expansion of which provides the systematic procedure for obtaining generatized quantum kinetic equations as well as the corrections to the latter in the case of quickly changing external fields. The form of the spectral function of oneparticle states is found.
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