English

Strong Logarithmic Sobolev Inequalities for Log-Subharmonic Functions

Functional Analysis 2019-08-15 v1

Abstract

We prove an intrinsic equivalence between strong hypercontractivity and a strong logarithmic Sobolev inequality for the cone of logarithmically subharmonic functions. We introduce a new large class of measures, Euclidean regular and exponential type, in addition to all compactly-supported measures, for which this equivalence holds. We prove a Sobolev density theorem through log-subharmonic functions, and use it to prove the equivalence of strong hypercontractivity and the strong log Sobolev inequality for such log-subharmonic functions.

Keywords

Cite

@article{arxiv.1311.3989,
  title  = {Strong Logarithmic Sobolev Inequalities for Log-Subharmonic Functions},
  author = {Piotr Graczyk and Todd Kemp and Jean-Jacques Loeb},
  journal= {arXiv preprint arXiv:1311.3989},
  year   = {2019}
}
R2 v1 2026-06-22T02:08:37.286Z