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:
影响因子:
--
通讯作者:
M. Fathi;Brent Nelson
中科院分区:
文献类型:
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作者:
M. Fathi;Brent Nelson
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.