Wellposedness and regularity of solutions of an aggregation equation

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Abstract

We consider an aggregation equation in R-d, d >= 2 with fractional dissipation: u(t) + del. (u del K*u) = nu Lambda(gamma)u, where nu >= 0, 0 < gamma >= 2 and K(x) = e(-vertical bar x vertical bar) In the supercritical case, 0 < gamma < 1, we obtain new local wellposedness results and smoothing properties of solutions. In the critical case, gamma = 1, we prove the global wellposedness for initial data having a small L-x(1) norm. In the subcritical case, gamma > 1, we prove global wellposedness and smoothing of solutions with general L-x(1) initial data.

Item Type: Journal Article
Subjects: Q Science > QA Mathematics
Divisions: Faculty of Science, Engineering and Medicine > Science > Mathematics
Journal or Publication Title: Revista Matematica Iberoamericana
Publisher: European Mathematical Society Publishing House
ISSN: 0213-2230
Official Date: 2010
Dates:
Date
Event
2010
Published
Volume: Vol.26
Number: No.1
Number of Pages: 34
Page Range: pp. 261-294
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Mathematics Department of the University of Iowa, National Science Foundation, Ministerio de Educacion y Ciencia (Spain)
Grant number: DMS-0635607, DMS-0908032, MTM2005-05980
URI: https://wrap.warwick.ac.uk/5802/

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