Correlation in the velocity of a Brownian particle induced by frictional anisotropy and magnetic field

Details Correlation in the velocity of a Brownian particle induced by frictional anisotropy and magnetic field Correlation in the velocity of a Brownian particle induced by frictional anisotropy and magnetic field

2007-06-27

arxiv.org/abs/0706.4090v2

Physics

Condensed Matter

Statistical Mechanics

7 pages, 2 figures

Scientific paper

10.1016/j.physleta.2007.10.098

We study the motion of charged Brownian particles in an external magnetic field. It is found that a correlation appears between the components of particle velocity in the case of anisotropic friction, approaching asymptotically zero in the stationary limit. If magnetic field is smaller compared to the critical value, determined by frictional anisotropy, the relaxation of the correlation is non-oscillating in time. However, in a larger magnetic field this relaxation becomes oscillating. The phenomenon is related to the statistical dependence of the components of transformed random force caused by the simultaneous influence of magnetic field and anisotropic dissipation.

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