arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2408.17243math.APq-bio.CB
收藏

一种动能趋化模型及其在板状几何中的扩散极限

A kinetic chemotaxis model and its diffusion limit in slab geometry

Johannes-Kepler University Linz(林茨约翰·开普勒大学);Johann Radon Institute for Computational and Applied Mathematics(约翰·拉登计算与应用数学研究所);University of Würzburg(维尔茨堡大学);University of Twente(特温特大学)

Herbert Egger, Kathrin Hellmuth, Nora Philippi, Matthias Schlottbom

AI总结:

本文提出了一种动能趋化模型,并在板状几何中研究其扩散极限,证明了高翻转率下的解收敛性及收敛速率。

摘要:

趋化作用描述了细胞对化学信号的复杂运动相互作用。我们考虑了板状几何情况,该情况模型了两个无限膜之间的趋化运动。与以往研究类似,我们特别关注高翻转率的渐进行为。我们建立了动能方程解的局部存在性和唯一性,并展示了其在渐近极限下向抛物型凯尔-塞格尔模型解的收敛性。此外,我们在问题数据的额外正则性假设下,证明了对渐近参数的收敛速率。我们分析中的特别困难由动能模型中消失的速度以及边界项的出现引起。

英文摘要:

Chemotaxis describes the intricate interplay of cellular motion in response to a chemical signal. We here consider the case of slab geometry which models chemotactic motion between two infinite membranes. Like previous works, we are particularly interested in the asymptotic regime of high tumbling rates. We establish local existence and uniqueness of solutions to the kinetic equation and show their convergence towards solutions of a parabolic Keller-Segel model in the asymptotic limit. In addition, we prove convergence rates with respect to the asymptotic parameter under additional regularity assumptions on the problem data. Particular difficulties in our analysis are caused by vanishing velocities in the kinetic model as well as the occurrence of boundary terms.

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。

↑