arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.02825math.PR
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共生分支模型:对偶性和接口

The symbiotic branching model: duality and interfaces

Jochen Blath, Marcel Ortgiese

摘要:

共生分支模型描述了一个空间的两种类型的人口,其中局部粒子分支的频率与最近邻迁移相结合的其他类型的速率的动态。该模型推广了种群动力学中的各种经典模型,如垫脚石模型和相互催化分支模型。我们特别感兴趣的是理解共存的区域,即两种类型之间的界面。在本章中,我们给出了一个概述,我们的结果,描述了这些接口在大尺度上的动态。这个系统易于处理的原因之一是它表现出丰富的对偶理论。因此,在同一时间,我们借此机会提供了一个介绍的对偶方法在空间人口模型的背景下的力量。

英文摘要:

The symbiotic branching model describes the dynamics of a spatial two-type population, where locally particles branch at a rate given by the frequency of the other type combined with nearest-neighbour migration. This model generalizes various classic models in population dynamics, such as the stepping stone model and the mutually catalytic branching model. We are particularly interested in understanding the region of coexistence, i.e. the interface between the two types. In this chapter, we give an overview over our results that describe the dynamics of these interfaces at large scales. One of the reasons that this system is tractable is that it exhibits a rich duality theory. So at the same time, we take the opportunity to provide an introduction to the strength of duality methods in the context of spatial population models.

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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