کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9868189 1530683 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Feedback-controlled diffusion: From self-trapping to true self-avoiding walks
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Feedback-controlled diffusion: From self-trapping to true self-avoiding walks
چکیده انگلیسی
We study the asymptotic behavior of a Brownian particle under the influence of a dynamical feedback by numerical simulations and analytical considerations. The feedback is controlled by a memory coupling of strength λ. Whereas a negative memory strength yields a true self avoiding walk, a positive memory leads to a self-trapping of the particle. The localization is manifested by a constant mean square displacement in the long time limit which appears after an initial diffusive regime. The probability distribution function of the trapping distance shows an exponential decay. The numerical simulations are compared with an analytical modeling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 339, Issues 3–5, 23 May 2005, Pages 224-231
نویسندگان
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