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Interaction Strength and a Generalized Bak-Sneppen Evolution
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LI Wei;CAI Xu |
Institute of Particle Physics, Huazhong Normal University, Wuhan 430079 |
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Cite this article: |
LI Wei, CAI Xu 2002 Chin. Phys. Lett. 19 1420-1423 |
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Abstract The Bak-Sneppen evolution model is generalized in terms of a new concept and quantity, interaction strength. Based on a quantitative definition, the interaction strength describes the strength of the interaction between the nearest neighbouring individuals in the model. Self-organized criticality is observed for the generalized model with ten different values of interaction strength. The gap equation governing the self-organization is derived. It is also found that the self-organized threshold depends on the value of the interaction strength.
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Keywords:
05.65.+b
45.70.Ht
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Published: 01 October 2002
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