English

Higher order concentration for functions of weakly dependent random variables

Probability 2020-05-15 v2

Abstract

We extend recent higher order concentration results in the discrete setting to include functions of possibly dependent variables whose distribution (on the product space) satisfies a logarithmic Sobolev inequality with respect to a difference operator that arises from Gibbs sampler type dynamics. Examples of such random variables include the Ising model on a graph with n nodes with general, but weak interactions, i.e. in the Dobrushin uniqueness regime, for which we prove concentration results of homogeneous polynomials, as well as random permutations, and slices of the hypercube with dynamics given by either the Bernoulli-Laplace or the symmetric simple exclusion processes.

Keywords

Cite

@article{arxiv.1801.06348,
  title  = {Higher order concentration for functions of weakly dependent random variables},
  author = {Friedrich Götze and Holger Sambale and Arthur Sinulis},
  journal= {arXiv preprint arXiv:1801.06348},
  year   = {2020}
}

Comments

Added concentration results for some polynomials in Ising models with external fields; streamlined a few proofs

R2 v1 2026-06-22T23:49:40.172Z