کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5375000 1504283 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rectification of motion in nonlinear media with asymmetric random drive
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Rectification of motion in nonlinear media with asymmetric random drive
چکیده انگلیسی
We consider moving particles in media with nonlinear friction and drive them by an asymmetric dichotomic Markov process. Due to different energy dissipations, during the forward and backward stroke, we obtain a mean non-vanishing directed flow of the particles. Starting with the stationary velocity distribution, we calculate the stationary current of particles, the variance and the relative variance in dependence on the degree of nonlinearity of the friction, on the asymmetry and for different strengths of friction. In two dimensions the particle performs diffusional motion, if in addition the direction of the asymmetric drive changes stochastically.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 375, Issues 2–3, 5 October 2010, Pages 439-444
نویسندگان
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