Frogs in Random Environment

Frogs in Random Environment
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随机环境中的青蛙

DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
S. Y. Popov
S. Y. Popov
中科院分区:
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文献类型:
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作者:
S. Y. Popov

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我们研究了所谓的青蛙模型:最初有一些“睡眠”粒子和一个“活动”粒子。当一个活跃的粒子击中一个沉睡的粒子时,它就会被激活,在那之后,被激活的粒子开始独立地行走,也可以激活其他沉睡的粒子。睡眠粒子的初始构型是随机的,密度为p(x)。我们确定了分离暂态和递归的p(x)的临界衰减率,并研究了模型的一些其他性质。
We study the so-called frog model: Initially there are some “sleeping” particles and one “active” particle. A sleeping particle is activated when an active particle hits it, after that the activated particle starts to walk independently of everything and can activate other sleeping particles as well. The initial configuration of sleeping particles is random with density p(x). We identify the critical rate of decay of p(x) separating transience from recurrence, and study some other properties of the model.