By generalizing Bogolyubov’s reduced description method, we suggest a formalism to derive kinetic equations for many-body dissipative systems in external stochastic field. As a starting point, we use a stochastic Liouville equation obtained from Hamilton’s equations taking dissipation and stochastic perturbations into account. The Liouville equation is then averaged over realizations of the stochastic field by an extension of the Furutsu-Novikov formula to the case of a non-Gaussian field. As the result, a generalization of the classical Bogolyubov-Born-Green-Kirkwood-Yvon (BBGKY) hierarchy is derived. In order to get a kinetic equation for the single-particle distribution function, we use a regular cutoff procedure of the BBGKY hierarchy by assuming weak interaction between the particles and weak intensity of the field. Within this approximation, we get the corresponding Fokker-Planck equation for the system in a non-Gaussian stochastic field. Two particular cases are discussed by assuming either Gaussian statistics of external perturbation or homogeneity of the system.
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April 2015
Research Article|
April 20 2015
The Bogolyubov-Born-Green-Kirkwood-Yvon hierarchy and Fokker-Planck equation for many-body dissipative randomly driven systems
O. Yu. Sliusarenko;
O. Yu. Sliusarenko
1
Akhiezer Institute for Theoretical Physics National Science Center “Kharkiv Institute of Physics and Technology,”
1 Akademichna St., 61108 Kharkiv, Ukraine
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A. V. Chechkin;
A. V. Chechkin
1
Akhiezer Institute for Theoretical Physics National Science Center “Kharkiv Institute of Physics and Technology,”
1 Akademichna St., 61108 Kharkiv, Ukraine
2
Max-Planck Institute for Physics of Complex Systems
, 38 Noethnitzer Strasse, 01187 Dresden, Germany
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Yu. V. Slyusarenko
Yu. V. Slyusarenko
a)
1
Akhiezer Institute for Theoretical Physics National Science Center “Kharkiv Institute of Physics and Technology,”
1 Akademichna St., 61108 Kharkiv, Ukraine
3
Karazin National University
, 4 Svobody Sq., 61077 Kharkiv, Ukraine
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a)
Electronic mail: slusarenko@kipt.kharkov.ua
J. Math. Phys. 56, 043302 (2015)
Article history
Received:
November 07 2014
Accepted:
April 08 2015
Citation
O. Yu. Sliusarenko, A. V. Chechkin, Yu. V. Slyusarenko; The Bogolyubov-Born-Green-Kirkwood-Yvon hierarchy and Fokker-Planck equation for many-body dissipative randomly driven systems. J. Math. Phys. 1 April 2015; 56 (4): 043302. https://doi.org/10.1063/1.4918612
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