| Interaction Strength and a Generalized Bak—Sneppen Evolution Model |
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| 作者姓名： | 李炜 蔡勖 |
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| 作者单位： | InstituteofParticlePhysics,HuazhongNormalUniversity,Wuhan430079 |
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| 摘 要： | 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-neighbour individuals in the model.Self-organized criticality is observed for the generalized model with ten different values of interactionstrength.The gap equation governing the self-organization is derived.It is also found that the self-organized threwshold depends on the value of the interaction strength.
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| 关 键 词： | 相互作用强度 广义Bak－Sneppen演变模型 自组织临界态 |
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