Journal
ANNALES DE L INSTITUT HENRI POINCARE-ANALYSE NON LINEAIRE
Volume 36, Issue 3, Pages 705-744Publisher
ELSEVIER
DOI: 10.1016/j.anihpc.2018.09.001
Keywords
Smoluchowski's coagulation equation; Self-similar solutions; Gelation
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Funding
- University of Bonn - German Science Foundation [CRC 1060]
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We consider Smoluchowski's coagulation equation in the case of the diagonal kernel with homogeneity gamma > 1. In this case the phenomenon of gelation occurs and solutions lose mass at some finite time. The problem of the existence of self-similar solutions involves a free parameter b, and one expects that a physically relevant solution (i.e. nonnegative and with sufficiently fast decay at infinity) exists for a single value of b, depending on the homogeneity gamma. We prove this picture rigorously for large values of gamma. In the general case, we discuss in detail the behavior of solutions to the self-similar equation as the parameter b changes. (C) 2018 Elsevier Masson SAS. All rights reserved.
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