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APS » Journals » Phys. Rev. E » Volume 58 » Issue 4
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Phys. Rev. E 58, R4057–R4059 (1998)

Quenched disorder enhances chaotic diffusion

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M. N. Popescu, Y. Braiman*, F. Family, and H. G. E. Hentschel
Department of Physics, Emory University, Atlanta, Georgia 30322

Received 28 May 1998; published in the issue dated October 1998

We show that chaotic diffusion of a single particle moving on a one-dimensional rough surface is enhanced by a small amount of spatial quenched disorder. In addition to enhanced diffusion we also find that there is a crossover from expanding to bounded motion. The crossover time to bounded motion decreases with increasing disorder, and there exists a threshold value of disorder above which chaotic motion is completely suppressed.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.58.R4057
DOI:
10.1103/PhysRevE.58.R4057
PACS:
81.40.Pq, 46.30.Pa, 05.45.+b

*Present address: Center for Engineering Science Advanced Research, Computer Science and Mathematics Division, Oak Ridge National Laboratory, P.O. Box 2008, Building 6010, MS-6355, Oak Ridge, TN 37831-6355.

 
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