کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5499822 1533627 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Current reversal in a symmetric periodic potential
ترجمه فارسی عنوان
معکوس کنونی در یک پدیده متقارن دوره ای
کلمات کلیدی
معکوس کنونی، پتانسیل دوره ای تقریبا متقارن، صداهای مرتبط سیگنال افزودنی،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک آماری و غیرخطی
چکیده انگلیسی
In previous research work, investigators have focused mainly on noise-induced current reversal (CR) in spatially ratchet systems, while less effort has been devoted to the CR in a spatially symmetric periodic potential. Transport of an underdamped Brownian particle in a symmetric periodic potential driven by correlated noises (correlation between additive noise and multiplicative noise) and periodic signals is investigated. By means of numerical calculations, we obtain average velocity (current) of the system. The results indicate that motion direction of the particle changes with increment of the additive or multiplicative noise intensity in case of the correlated noises, i.e., CR. Our further investigations show that the additive signal and the correlation between the noises are two necessary ingredients for the CR in the spatially symmetric system. And the CR is brought about by the symmetry breaking induced by the noises, not by temporal symmetry breaking.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chaos, Solitons & Fractals - Volume 98, May 2017, Pages 205-209
نویسندگان
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