Optimal Time Decay Rates for a Chemotaxis Model with Logarithmic Sensitivity

Optimal Time Decay Rates for a Chemotaxis Model with Logarithmic Sensitivity
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DOI:
10.1007/978-3-030-63591-6_42
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发表时间:
2021
期刊:
Springer Proceedings in Mathematics & Statistics
影响因子:
--
通讯作者:
Yanni Zeng;Kun Zhao
Yanni Zeng;Kun Zhao
中科院分区:
其他
文献类型:
--
作者:
Yanni Zeng;Kun Zhao

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考虑了一类具有对数灵敏度和密度依赖的生产/消耗速率的Keller-Segel型趋化模型.它是描述细胞与化学信号相互作用的反应扩散系统。研究了原系统及其变换系统的Cauchy问题,该问题是双曲-抛物型守恒律之一。在扩散和非扩散化学的情况下,我们得到的解决方案的最优时间衰减率。我们的结果改进了Li等人(Nonlinearity 28:2181-2210,2015),Martinez等人(印第安纳州Univ Math J 67:1383-1424,2018)中的结果。
We consider a Keller-Segel type chemotaxis model with logarithmic sensitivity and density-dependent production/consumption rate. It is areaction-diffusion system describing the interaction of cells and a chemical signal. We study Cauchy problem for the original system and its transformed system, which is one of hyperbolic-parabolic conservation laws. In both cases of diffusive and non-diffusive chemical, we obtain optimaltime decay rates for the solution. Our results improve those in Li et al. (Nonlinearity 28:2181-2210, 2015 ), Martinez et al. (Indiana Univ Math J 67:1383-1424, 2018 ).