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arXiv 1003.3548math.PR
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具有多重出生、死亡和跳跃的粒子系统的随机序和吸引性

Stochastic order and attractiveness for particle systems with multiple births, deaths and jumps

Davide Borrello

摘要:

分析粒子系统性质的一种方法是将其与不同的过程进行比较,以了解其中一个过程何时大于其他过程。实现这一点的主要技术是耦合,这可能不容易构建。我们给出了一个表征的随机顺序之间的不同的相互作用的粒子系统在一个大类的过程中的出生,死亡和跳跃的许多粒子每次取决于配置的一般方式:它包括在检查不平等的过渡率。我们明确地构造耦合的随机顺序的特点。作为推论,我们得到吸引性的充要条件。作为应用,我们首先给出了反应扩散过程、多型接触过程和保守动力学等例子的条件,然后改进了一个传染病模型的遍历性结果.

英文摘要:

An approach to analyse the properties of a particle system is to compare it with different processes to understand when one of them is larger than other ones. The main technique for that is coupling, which may not be easy to construct. We give a characterization of stochastic order between different interacting particle systems in a large class of processes with births, deaths and jumps of many particles per time depending on the configuration in a general way: it consists in checking inequalities involving the transition rates. We construct explicitly the coupling that characterizes the stochastic order. As a corollary we get necessary and sufficient conditions for attractiveness. As an application, we first give the conditions on examples including reaction-diffusion processes, multitype contact process and conservative dynamics and then we improve an ergodicity result for an epidemic model.

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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