Phys. Rev. Lett. 84, 2556 - 2559 (2000)Kramers Problem for a Multiwell Potential |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1984: |
M. Arrayás1,2, I. Kh. Kaufman1,3, D. G. Luchinsky1,3, P. V. E. McClintock1, and S. M. Soskin4
1Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom
2Instituut-Lorentz, Universiteit Leiden, Postbus 9506, 2300 RA Leiden, The Netherlands
3Russian Research Institute for Metrological Service, Ozernaya 46, 119361 Moscow, Russia
4Institute of Semiconductor Physics, Ukrainian National Academy of Sciences, Kiev, Ukraine
Received 22 September 1999
Fluctuational escape from a multiwell potential is shown to display new features, as compared to the conventional single-well case. The flux J may depend on friction Γ exponentially strongly, over an exponentially long period; for small enough temperatures, J(Γ) undergoes marked oscillations in the range of small Γ, and the time evolution of J changes drastically as Γ exceeds a critical value.
©2000 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v84/p2556
DOI: 10.1103/PhysRevLett.84.2556
PACS: 05.40.-a, 02.50.-r, 05.20.-y
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