Can large inhomogeneities generate target patterns?
Can large inhomogeneities generate target patterns?
复制标题
较大的不均匀性可以产生目标模式吗?
DOI:
10.1007/s00033-023-02027-4
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Jaramillo, Gabriela
中科院分区:
文献类型:
--
作者:
Jaramillo, Gabriela
We study the existence of target patterns in oscillatory media with weak local coupling and in the presence of an impurity, or defect. We model these systems using a viscous eikonal equation posed on the plane and represent the defect as a perturbation. In contrast to previous results, we consider large defects, which we describe using a function with slow algebraic decay, i.e.,for. We prove that these defects are able to generate target patterns and that, just as in the case of strongly localized impurities, their frequency is small beyond all orders of the small parameter describing their strength. Our analysis consists of finding two approximations to target pattern solutions, one which is valid at intermediate scales and a second one which is valid in the far field. This is done using weighted Sobolev spaces, which allow us to recover Fredholm properties of the relevant linear operators, as well as the implicit function theorem, which is then used to prove existence. By matching the intermediate and far-field approximations, we then determine the frequency of the pattern that is selected by the system.
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影响因子:
1.7
作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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影响因子:
2.1
作者:
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影响因子:
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通讯作者:
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DOI:
--
发表时间:
2016
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
作者:
Gabriela Jaramillo;A. Scheel;Qi
通讯作者:
Qi