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Stochastic Resonance in a Linear Fractional Langevin Equation
Authors:Suchuan Zhong  Kun Wei  Shilong Gao  Hong Ma
Institution:1. College of Mathematics, Sichuan University, Chengdu, 610065, China
2. Sichuan University Jincheng College, Chengdu, 611731, China
3. School of Mathematical Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, China
4. College of Mathematics and Information Science, Leshan Normal University, Leshan, 614000, China
Abstract:The fractional Langevin equation is derived from the generalized Langevin equation driven by the additive fractional Gaussian noise. We investigate the stochastic resonance (SR) phenomenon in the underdamped linear fractional Langevin equation under the external periodic force and multiplicative symmetric dichotomous noise. Applying the Shapiro-Loginov formula and the Laplace transform technique, we obtain the exact expressions of the amplitude and signal-to-noise ratio (SNR) of the system. By studying the impacts of the driving frequency and the noise parameters, we find the non-monotonic behaviors of the output amplitude and SNR. The results indicate that the bona fide SR, conventional SR and the wide sense of SR phenomena occur in the proposed linear fractional system.
Keywords:
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