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• W2953121567 abstract "We consider a class of $L^1$ critical nonlocal aggregation equations with linear or nonlinear porous media-type diffusion which are characterized by a long-range interaction potential that decays faster than the Newtonian potential at infinity. The fast decay breaks the $L^1$ scaling symmetry and we prove that `sufficiently spread out' initial data, regardless of the mass, result in global spreading solutions. This is in contrast to the classical parabolic-elliptic PKS for which essentially all solutions with more than critical mass are known to blow up in finite time. In all cases, the long-time asymptotics are given by the self-similar solution to the linear heat equation or by the Barenblatt solutions of the porous media equation. The results with linear diffusion are proved using properties of the Fokker-Planck semi-group whereas the results with nonlinear diffusion are proved using a more interesting bootstrap argument coupling the entropy-entropy dissipation methods of the porous media equation together with higher $L^p$ estimates similar to those used in small-data and local theory for PKS-type equations." @default.
• W2953121567 created "2019-06-27" @default.
• W2953121567 creator A5081815930 @default.
• W2953121567 date "2014-03-17" @default.
• W2953121567 modified "2023-09-27" @default.
• W2953121567 title "Large mass global solutions for a class of L1-critical nonlocal aggregation equations and parabolic-elliptic Patlak-Keller-Segel models" @default.
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• W2953121567 hasPublicationYear "2014" @default.
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