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arXiv 0711.4571cond-mat.stat-mech
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自组织临界性的E-堆模型

E-pile model of self-organized criticality

A. V. Milovanov, K. Rypdal, J. J. Rasmussen

摘要:

渗流的概念相结合的一个自洽的处理动态之间的相互作用的晶格和外部驱动器。这样的处理可以提供一种机制,通过该机制,系统无需微调就可以发展到临界状态,从而提供了一条通向自组织临界性(SOC)的途径,在许多情况下,SOC比标准沙堆公式中使用的弱随机驱动与边界损失/耗散相结合更自然。我们引入了一个新的隐喻,e-堆模型,并在随机介质中的电传导的形式主义计算这样一个系统的临界指数。该模型的变化适用于许多其他物理问题,如电等离子体放电,介电弛豫,以及地球磁尾的动力学。

英文摘要:

The concept of percolation is combined with a self-consistent treatment of the interaction between the dynamics on a lattice and the external drive. Such a treatment can provide a mechanism by which the system evolves to criticality without fine tuning, thus offering a route to self-organized criticality (SOC) which in many cases is more natural than the weak random drive combined with boundary loss/dissipation as used in standard sand-pile formulations. We introduce a new metaphor, the e-pile model, and a formalism for electric conduction in random media to compute critical exponents for such a system. Variations of the model apply to a number of other physical problems, such as electric plasma discharges, dielectric relaxation, and the dynamics of the Earth's magnetotail.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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