Brownian motion: a case of temperature fluctuations

Details Brownian motion: a case of temperature fluctuations Brownian motion: a case of temperature fluctuations

2004-06-29

arxiv.org/abs/cond-mat/0406708v1

Physics

Condensed Matter

Statistical Mechanics

accepted for publication in Acta Physica Polonica B

Scientific paper

A diffusion process of a Brownian particle in a medium of temperature $T$ is re-considered. We assume that temperature of the medium fluctuates around its mean value. The velocity probability distribution is obtained. It is shown that the stationary state is not a thermodynamic equilibrium state described by the Maxwell distribution. Instead a nonequilibrium state is produced by temperature fluctuations.

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