کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7375256 | 1480071 | 2018 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temporal correlations in the Vicsek model with vectorial noise
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Temporal correlations in the Vicsek model with vectorial noise Temporal correlations in the Vicsek model with vectorial noise](/preview/png/7375256.png)
چکیده انگلیسی
We study the temporal correlations in the evolution of the order parameter Ït for the Vicsek model with vectorial noise by estimating its Hurst exponent H with detrended fluctuation analysis (DFA). We present results on this parameter as a function of noise amplitude η introduced in simulations. We also compare with well known order-disorder phase transition for that same noise range. We find that - regardless of detrending degree - H spikes at the known coexistence noise for phase transition, and that this is due to nonstationarities introduced by the transit of the system between two well defined states with lower exponents. We statistically support this claim by successfully synthesizing equivalent cases derived from a transformed fractional Brownian motion (TfBm).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 502, 15 July 2018, Pages 590-604
Journal: Physica A: Statistical Mechanics and its Applications - Volume 502, 15 July 2018, Pages 590-604
نویسندگان
Damián Gulich, Gabriel Baglietto, Alejandro F. Rozenfeld,