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Perturbation Theory and the Renormalization Group in Genetic Dynamics

机译:扰动理论与遗传动力学中的归一化群

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摘要

Although much progress has been made in recent years in the theory of G As and GP, there is still a conspicuous lack of tools with which to derive systematic, approximate solutions to their dynamics. In this article we propose and study perturbation theory as a potential tool to fill this gap. We concentrate mainly on selection-mutation systems, showing different implementations of the perturbative framework, developing, for example, perturbative expansions for the eigenvalues and eigenvectors of the transition matrix. The main focus however, is on diagrammatic methods, taken from physics, where we show how approximations can be built up using a pictorial representation generated by a simple set of rules, and how the renormalization group can be used to systematically improve the perturbation theory.
机译:尽管近年来在砷化镓和GP的理论上已经取得了很大的进步,但是仍然明显缺乏用于导出其动力学的系统的,近似的解决方案的工具。在本文中,我们提出并研究微扰理论,将其作为填补这一空白的潜在工具。我们主要集中在选择突变系统上,展示了微扰框架的不同实现,例如,为过渡矩阵的特征值和特征向量开发了微扰展开。但是,主要重点是从物理学中获取的图解方法,其中我们展示了如何使用由一组简单规则生成的图形表示来建立近似值,以及如何使用重归一化组来系统地改善扰动理论。

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