## Electronic Journal of Probability

### Functional Inequalities for Heavy Tailed Distributions and Application to Isoperimetry

#### Abstract

This paper is devoted to the study of probability measures with heavy tails. Using the Lyapunov function approach we prove that such measures satisfy different kind of functional inequalities such as weak Poincaré and weak Cheeger, weighted Poincaré and weighted Cheeger inequalities and their dual forms. Proofs are short and we cover very large situations. For product measures on $\mathbb{R}^n$ we obtain the optimal dimension dependence using the mass transportation method. Then we derive (optimal) isoperimetric inequalities. Finally we deal with spherically symmetric measures. We recover and improve many previous result

#### Article information

Source
Electron. J. Probab., Volume 15 (2010), paper no. 13, 346-385.

Dates
Accepted: 9 April 2010
First available in Project Euclid: 1 June 2016

https://projecteuclid.org/euclid.ejp/1464819798

Digital Object Identifier
doi:10.1214/EJP.v15-754

Mathematical Reviews number (MathSciNet)
MR2609591

Zentralblatt MATH identifier
1205.60039

Subjects
Primary: 60E15 - 26D10

Rights

#### Citation

Cattiaux, Patrick; Gozlan, Nathael; Guillin, Arnaud; Roberto, Cyril. Functional Inequalities for Heavy Tailed Distributions and Application to Isoperimetry. Electron. J. Probab. 15 (2010), paper no. 13, 346--385. doi:10.1214/EJP.v15-754. https://projecteuclid.org/euclid.ejp/1464819798

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