Geodesic
Toward polaron kinetics in the Bogoliubov reduced description method
Teoretičeskaâ i matematičeskaâ fizika, Tome 168 (2011) no. 2, pp. 341-357 Cet article a éte moissonné depuis la source Math-Net.Ru

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In the framework of the Bogoliubov method of reduced description of nonequilibrium states, which is based on his functional hypothesis, we obtain a kinetic equation for arbitrary inhomogeneous electron states in a polar crystal in the presence of a strong electric field. Using the reduced description method, we study the equalization of velocities and temperatures of the polaron gas with a small density and the phonon subsystem in the presence of a weak electric field in the spatially homogeneous case. We establish that the nonequilibrium distribution function of a polaron differs from the Maxwell distribution even in the approximation that is linear in small differences between the subsystem velocities and temperatures. We calculate the corresponding relaxation times and polaron mobility.
Mots-clés : polaron
Keywords: Bogoliubov reduced description method, functional hypothesis, kinetic equation, strongly inhomogeneous state, strong electric field, relaxation phenomenon, polaron mobility. 
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S. A. Sokolovsky. Toward polaron kinetics in the Bogoliubov reduced description method. Teoretičeskaâ i matematičeskaâ fizika, Tome 168 (2011) no. 2, pp. 341-357. http://geodesic.mathdoc.fr/item/TMF_2011_168_2_a9/

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