Threshold-diversity-induced resonance |
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Authors: | Hanshuang Chen Zhonghuai Hou Houwen Xin |
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Institution: | a Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China b Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, People’s Republic of China |
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Abstract: | The effect of diversity on a system of coupled threshold elements is investigated, where each element is driven by a common periodic signal. Diversity is introduced to the system by assuming that the thresholds of all units are heterogeneous, e.g. the thresholds follow a Gaussian or other distribution. A combined numerical and analytical approach shows that the response of the system to the input signal is maximized at a moderate value of the diversity amplitude, which is similar to the well-known stochastic resonance phenomenon induced by noise. Our findings exhibit that the diversity, a kind of spatial disorder, may play a similar role to noise as a kind of temporal disorder. |
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Keywords: | 05 40 Ca 05 45 -a 89 75 -k |
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