arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.04029math.AP
收藏

具有非线性扩散的Poisson-Nernst-Planck型系统的指数收敛

Exponential convergence to equilibrium in a Poisson-Nernst-Planck-type system with nonlinear diffusion

Jonathan Zinsl

摘要:

我们研究了Poisson-Nernst-Planck型系统在三维空间中的电漂移的强度取决于一个可能的小参数和粒子被假定为二次扩散。基于Kinderlehrer,Monsaingeon and Xu(2015)利用系统的形式Wasserstein梯度流结构证明的整体存在性结果,我们分析了弱解的长时间行为.在外部漂移势一致凸的假设下,我们证明了系统具有唯一的稳态。如果电漂移的强度是足够小的,我们显示的解决方案收敛到各自的稳定状态,以指数速率使用熵耗散方法。

英文摘要:

We investigate a Poisson-Nernst-Planck type system in three spatial dimensions where the strength of the electric drift depends on a possibly small parameter and the particles are assumed to diffuse quadratically. On grounds of the global existence result proved by Kinderlehrer, Monsaingeon and Xu (2015) using the formal Wasserstein gradient flow structure of the system, we analyse the long-time behaviour of weak solutions. We prove under the assumption of uniform convexity of the external drift potentials that the system possesses a unique steady state. If the strength of the electric drift is sufficiently small, we show convergence of solutions to the respective steady state at an exponential rate using entropy-dissipation methods.

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。

↑