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Phys. Rev. E 62, 7729–7734 (2000)

Anomalous diffusion of particles driven by correlated noise

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S. I. Denisov*
Department of Mechanics and Mathematics, Sumy State University, 2, Rimskiy-Korsakov Street, 40007 Sumy, Ukraine

Werner Horsthemke
Department of Chemistry, Southern Methodist University, Dallas, Texas 75275-0314

Received 14 August 2000; published in the issue dated December 2000

We study the effect of an arbitrary stationary random force on the motion of damped particles. Using a Langevin description, we derive exact expressions for the dispersion of the particle position, of the particle velocity, and their cross dispersion. The particles can exhibit anomalous diffusion, and the connection between this behavior and the functional form of the noise correlations is investigated in detail. We also study anomalous diffusion for the special cases of overdamped and undamped particles.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.62.7729
DOI:
10.1103/PhysRevE.62.7729
PACS:
05.40.-a, 05.10.Gg, 02.50.Ey

*Electronic address: denisov@ssu.sumy.ua

Electronic address: whorsthe@mail.smu.edu