Dimensional improvements of the logarithmic Sobolev, Talagrand and Brascamp–Lieb inequalities

F Bolley, I Gentil, A Guillin - The Annals of Probability, 2018 - JSTOR
In this work, we consider dimensional improvements of the logarithmic Sobolev, Talagrand
and Brascamp–Lieb inequalities. For this, we use optimal transport methods and the Borell …

A family of Beckner inequalities under various curvature-dimension conditions

I Gentil, S Zugmeyer - 2021 - projecteuclid.org
In this paper, we offer a proof for a family of functional inequalities interpolating between the
Poincaré and the logarithmic Sobolev (standard and weighted) inequalities. The proofs rely …

[PDF][PDF] Wasserstein contraction and Poincaré inequalities for elliptic diffusions with high diffusivity

P Monmarché - Annales Henri Lebesgue, 2023 - scholar.archive.org
We consider elliptic diffusion processes on R d. Assuming that the drift contracts distances
outside a compact set, we prove that, when the diffusion coefficient is sufficiently large, the …

Weighted Poincaré inequalities, concentration inequalities and tail bounds related to Stein kernels in dimension one

A Saumard - 2019 - projecteuclid.org
Weighted Poincare inequalities, concentration inequalities and tail bounds related to Stein
kernels in dimension one Page 1 Bernoulli 25(4B), 2019, 3978–4006 https://doi.org/10.3150/19-BEJ1117 …

Self-improvement of the Bakry-Emery criterion for Poincaré inequalities and Wasserstein contraction using variable curvature bounds

P Cattiaux, M Fathi, A Guillin - Journal de Mathématiques Pures et …, 2022 - Elsevier
We study Poincaré inequalities and long-time behavior for diffusion processes on R n under
a variable curvature lower bound, in the sense of Bakry-Emery. We derive various estimates …

Wasserstein contraction and Poincar\'e inequalities for elliptic diffusions at high temperature

P Monmarché - arXiv preprint arXiv:2201.07523, 2022 - arxiv.org
We consider elliptic diffusion processes on $\mathbb R^ d $. Assuming that the drift
contracts distances outside a compact set, we prove that, at a sufficiently high temperature …

Sharp Beckner-type inequalities for Cauchy and spherical distributions

D Bakry, I Gentil, G Scheffer - arXiv preprint arXiv:1804.03374, 2018 - arxiv.org
Using some harmonic extensions on the upper-half plane, and probabilistic representations,
and curvature-dimension inequalities with some negative dimensions, we obtain some new …

A Feynman-Kac approach for logarithmic Sobolev inequalities

C Steiner - Electronic Journal of Probability, 2021 - projecteuclid.org
This note presents a method based on Feynman-Kac semigroups for logarithmic Sobolev
inequalities. It follows the recent work of Bonnefont and Joulin on intertwining relations for …

A note on eigenvalues estimates for one-dimensional diffusion operators

M Bonnefont, A Joulin - Bernoulli, 2022 - projecteuclid.org
Dealing with one-dimensional diffusion operators, we obtain upper and lower variational
formulae on the eigenvalues given by the max–min principle, generalizing the celebrated …

Intertwinings, second-order Brascamp-Lieb inequalities and spectral estimates

M Bonnefont, A Joulin - arXiv preprint arXiv:1710.08106, 2017 - arxiv.org
We explore the consequences of the so-called intertwinings between gradients and Markov
diffusion operators on $ R^ d $ in terms of second-order Brascamp-Lieb inequalities for log …