Asymptotic Simplification of Aggregation-Diffusion Equations Towards the Heat kernel

Asymptotic Simplification of Aggregation-Diffusion Equations Towards the Heat kernel
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面向热核的聚集扩散方程的渐近简化

DOI:
10.1007/s00205-022-01838-5
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发表时间:
2023
影响因子:
2.5
通讯作者:
Zeng, Chongchun
Zeng, Chongchun
中科院分区:
数学1区
文献类型:
--
作者:
Carrillo, José A.;Gómez-Castro, David;Yao, Yao;Zeng, Chongchun

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We give sharp conditions for the large time asymptotic simplification of aggregation-diffusion equations with linear diffusion. As soon as the interaction potential is bounded and its first and second derivatives decay fast enough at infinity, then the linear diffusion overcomes its effect, either attractive or repulsive, for large times independently of the initial data, and solutions behave like the fundamental solution of the heat equation with some rate. The potentialforappears as the natural limiting case when the intermediate asymptotics change. In order to obtain such a result, we produce uniform-in-time estimates in a suitable rescaled change of variables for the entropy, the second moment, Sobolev norms and theregularity with a novel approach for this family of equations using modulus of continuity techniques.
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