Physics – Condensed Matter – Statistical Mechanics
Scientific paper
1999-07-22
Phys. Rev. E 60, 6421 (1999)
Physics
Condensed Matter
Statistical Mechanics
14 pages, 12 figures. Submitted to Phys. Rev. E
Scientific paper
10.1103/PhysRevE.60.6421
The mobility of an overdamped particle, in a periodic potential tilted by a constant external field and moving in a medium with periodic friction coefficient is examined. When the potential and the friction coefficient have the same periodicity but have a phase difference, the mobility shows many interesting features as a function of the applied force, the temperature, etc. The mobility shows stochastic resonance even for constant applied force, an issue of much recent interest. The mobility also exhibits a resonance like phenomenon as a function of the field strength and noise induced slowing down of the particle in an appropriate parameter regime.
Dan Debasis
Jayannavar Arun M.
Mahato Mangal C.
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