Self-similar Solutions with Fat Tails for Smoluchowski’s Coagulation Equation with Locally Bounded Kernels
Self-similar Solutions with Fat Tails for Smoluchowski’s Coagulation Equation with Locally Bounded Kernels
复制标题
具有局部有界核的 Smoluchowski 凝固方程的厚尾自相似解
DOI:
10.1007/s00220-012-1553-5
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发表时间:
2013
影响因子:
2.4
通讯作者:
J. J. L. Veláquez
中科院分区:
文献类型:
--
作者:
B. Niethammer;J. J. L. Veláquez
The existence of self-similar solutions with fat tails for Smoluchowski’s coagulation equation has so far only been established for the solvable kernels and the diagonal one. In this paper we prove the existence of such self-similar solutions for continuous kernelsKthat are homogeneous of degreeand satisfyK(x,y) ≤C(xγ+yγ). More precisely, for anywe establish the existence of a continuous weak nonnegative self-similar profile with decayasx→ ∞.For the proof we consider the time-dependent problem in self-similar variables with the aim to use a variant of Tykonov’s fixed point theorem to establish the existence of a stationary profile. This requires to identify a weakly compact subset that is invariant under the evolution. In our case we define a set of nonnegative measures which encodes the desired decay behaviour in an integrated form. The main difficulty is to establish the invariance of the lower bound under the evolution. Our key idea is to choose as a test function in the time dependent problem the solution of the associated backward dual problem.
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DOI:
10.1021/jp406540p
发表时间:
2014-09-18
期刊:
The journal of physical chemistry. A
影响因子:
--
作者:
Bartl P;Leidlmair C;Denifl S;Scheier P;Echt O
通讯作者:
Echt O
DOI:
10.1007/s00605-005-0308-1
发表时间:
2005
期刊:
Monatshefte für Mathematik
影响因子:
--
作者:
P. Laurençot;S. Mischler
通讯作者:
S. Mischler
影响因子:
1.2
作者:
J. Cañizo;S. Mischler
通讯作者:
S. Mischler
DOI:
10.1017/s0308210500005035
发表时间:
2006
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
作者:
N. Fournier;P. Laurençot
通讯作者:
P. Laurençot
影响因子:
1.6
作者:
M. Kreer;O. Penrose
通讯作者:
O. Penrose