Self-organized Criticality in an Earthquake Model on Random Network |
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Authors: | ZHANG Duan-Ming SUN Fan YU Bo-Ming PAN Gui-Jun SUN Hong-Zhang YIN Yan-Ping LI Rui SU Xiang-Ying |
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Institution: | Department of Physics, Huazhong University of Science and
Technology, Wuhan 430074, China |
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Abstract: | A simplified Olami-Feder-Christensen model on a random network has been studied. We propose a new toppling rule — when there is an unstable site toppling, the energy of the site is redistributed to its nearest neighbors randomly not averagely. The simulation results indicate that the model displays self-organized criticality when the system is conservative, and the avalanche size probability distribution of the system
obeys finite size scaling. When the system is nonconservative, the model
does not display scaling behavior. Simulation results of our model with
different nearest neighbors q is also compared, which indicates that the
spatial topology does not alter the critical behavior of the system. |
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Keywords: | self-organized criticality earthquake model finite size scaling random network |
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