Volume 100, Number 5, December 2012
|Number of page(s)||4|
|Published online||17 December 2012|
Diffusion in the systems with low dissipation: Exponential growth with temperature drop
1 NSC “Kharkov Institute of Physics and Technology” - Akademicheskaya 1, 61108 Kharkov, Ukraine
2 Kharkov National University - Svobody Sq. 4, 61077 Kharkov, Ukraine
3 NTU “Kharkov Polytechnic Institute” - Frunze 21, 61145 Kharkov, Ukraine
Received: 31 August 2012
Accepted: 23 November 2012
We study the diffusion of particles exposed to the external constant force in the periodic spatial potential by means of computer modelling. It has been shown that in the underdamped case the diffusion coefficient is increased exponentially with a drop in temperature in a certain interval of F. The physical reasons for such an abnormal behavior have been analyzed.
PACS: 05.40.−a – / 05.60.−k – / 02.60.Cb –
© EPLA, 2012
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