Low Temperature Physics: 33, 800 (2007); https://doi.org/10.1063/1.2784144 (3 pages)
Физика Низких Температур: Том 33, Выпуск 9 (Сентябрь 2007), c. 1049-1051    ( к оглавлению , назад )

Nonequilibrium statistical operators for systems with finite lifetime

V.V. Ryazanov

Institute for Nuclear Research of the National Academy of Sciences of Ukraine 47 Nauky Prosp., Kiev 03068, Ukraine
E-mail: vryazan@kinr.kiev.ua

Received January 18, 2007


A family of nonequilibrium statistical operators (NSO) is introduced which differ by the system lifetime distribution over which the quasiequilibrium (relevant) distribution is averaged. This changes the form of the source in the Liouville equation, as well as the expressions for the kinetic coefficients, average fluxes, and kinetic equations obtained with use of NSO. The difference from the Zubarev form of NSO is of the order of the reciprocal lifetime of a system.

PACS: 02.50.–r Probability theory, stochastic processes, and statistics;
PACS: 05.70.Ln Nonequilibrium and irreversible thermodynamics;
PACS: 31.70.Hq Time-dependent phenomena: excitation and relaxation processes, and reaction rates.

Key words: nonequilibrium statistical operator, lifetime distributions, past, present.