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arXiv 1503.05745math.AP
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一个动力学反应模型:衰减到平衡和宏观极限

A kinetic reaction model: decay to equilibrium and macroscopic limit

Lukas Neumann, Christian Schmeiser

摘要:

我们提出了一个动力学弛豫模型来描述两个物种的生成-复合反应。本文用两种最近的方法研究了线性化方程的衰变过程,证明了线性化方程的假充性。对于完全非线性问题,可以显示小扰动的指数衰减。宏观/快反应极限严格采用熵衰减,导致在一个非线性扩散方程的位置密度的差异。

英文摘要:

We propose a kinetic relaxation-model to describe a generation-recombination reaction of two species. The decay to equilibrium is studied by two recent methods for proving hypocoercivity of the linearized equations. Exponential decay of small perturbations can be shown for the full nonlinear problem. The macroscopic/fast-reaction limit is derived rigorously employing entropy decay, resulting in a nonlinear diffusion equation for the difference of the position densities.

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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