Convex Sobolev Inequalities Derived from Entropy Dissipation
Convex Sobolev Inequalities Derived from Entropy Dissipation
复制标题
由熵耗散导出的凸索博列夫不等式
DOI:
10.1007/s00205-010-0331-9
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发表时间:
2010
影响因子:
2.5
通讯作者:
G. Toscani
中科院分区:
文献类型:
--
作者:
D. Matthes;A. Jüngel;G. Toscani
We study families of convex Sobolev inequalities, which arise as entropy–dissipation relations for certain linear Fokker–Planck equations. Extending the ideas recently developed by the first two authors, a refinement of the Bakry–Émery method is established, which allows us to prove non-trivial inequalities even in situations where the classical Bakry–Émery criterion fails. The main application of our theory concerns the linearized fast diffusion equation in dimensionsd≧ 1, which admits a Poincaré, but no logarithmic Sobolev inequality. We calculate bounds on the constants in the interpolating convex Sobolev inequalities, and prove that these bounds are sharp on a specified range. In dimensiond= 1, our estimates improve the corresponding results that can be obtained by the measure-theoretic techniques of Barthe and Roberto. As a by-product, we give a short and elementary alternative proof of the sharp spectral gap inequality first obtained by Denzler and McCann. In further applications of our method, we prove convex Sobolev inequalities for a mean field model for the redistribution of wealth in a simple market economy, and the Lasota model for blood cell production.
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影响因子:
1
作者:
Jean Dolbeault;B. Nazaret;Giuseppe Savaré
通讯作者:
Giuseppe Savaré
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
M. Ledoux
通讯作者:
M. Ledoux
影响因子:
1.7
作者:
J. Carrillo;C. Lederman;P. Markowich;G. Toscani
通讯作者:
G. Toscani
DOI:
10.1090/s0002-9939-1989-0954373-7
发表时间:
1989-02
期刊:
--
影响因子:
--
作者:
W. Beckner
通讯作者:
W. Beckner
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
J. Dolbeault;Jean
通讯作者:
Jean