Free Stein kernels and an improvement of the free logarithmic Sobolev inequality

Free Stein kernels and an improvement of the free logarithmic Sobolev inequality
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DOI:
10.1016/j.aim.2017.06.035
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发表时间:
2016-05
期刊:
arXiv: Operator Algebras
影响因子:
--
通讯作者:
M. Fathi;Brent Nelson
M. Fathi;Brent Nelson
中科院分区:
其他
文献类型:
--
作者:
M. Fathi;Brent Nelson

文献摘要

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我们介绍一个自由版本的斯坦内核,相对于一个半圆形的法律。我们利用它得到了Ledoux,Peccatti和Nourdin的HSI不等式的一个自由对应,它是Biane和Speicher的自由对数Sobolev不等式的一个改进,也是(多元)熵自由中心极限定理的一个收敛速度.我们还计算了几个相关自伴算子族的自由Stein核。
We introduce a free version of the Stein kernel, relative to a semicircular law. We use it to obtain a free counterpart of the HSI inequality of Ledoux, Peccatti and Nourdin, which is an improvement of the free logarithmic Sobolev inequality of Biane and Speicher, as well as a rate of convergence in the (multivariate) entropic free Central Limit Theorem. We also compute the free Stein kernels for several relevant families of self-adjoint operators.