{ "id": "0803.1462", "version": "v2", "published": "2008-03-10T17:45:51.000Z", "updated": "2009-05-08T14:31:45.000Z", "title": "Regularity, asymptotic behavior and partial uniqueness for Smoluchowski's coagulation equation", "authors": [ "Stéphane Mischler", "José Alfredo Cañizo" ], "journal": "Revista Matem\\'atica Iberoamericana, Vol. 27, No. 3, pp. 803-839 (2011)", "categories": [ "math-ph", "math.MP" ], "abstract": "We consider Smoluchowski's equation with a homogeneous kernel of the form $a(x,y) = x^\\alpha y ^\\beta + x^\\beta y^\\alpha$ with $-1 < \\alpha \\leq \\beta < 1$ and $\\lambda := \\alpha + \\beta \\in (-1,1)$. We first show that self-similar solutions of this equation are infinitely differentiable and prove sharp results on the behavior of self-similar profiles at $y = 0$ in the case $\\alpha < 0$. We also give some partial uniqueness results for self-similar profiles: in the case $\\alpha = 0$ we prove that two profiles with the same mass and moment of order $\\lambda$ are necessarily equal, while in the case $\\alpha < 0$ we prove that two profiles with the same moments of order $\\alpha$ and $\\beta$, and which are asymptotic at $y=0$, are equal. Our methods include a new representation of the coagulation operator, and estimates of its regularity using derivatives of fractional order.", "revisions": [ { "version": "v2", "updated": "2009-05-08T14:31:45.000Z" } ], "analyses": { "keywords": [ "smoluchowskis coagulation equation", "asymptotic behavior", "regularity", "self-similar profiles", "partial uniqueness results" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0803.1462M" } } }