Graph H\"ormander Systems
Mathematical Physics
2020-07-01 v3 Differential Geometry
Functional Analysis
math.MP
Abstract
This paper extends the Bakry-\'{E}mery theorem connecting the Ricci curvature and log-Sobolev inequalities to the matrix-valued setting. Using tools from noncommuative geometry, it is shown that for a right invariant second order differential operator on a compact Lie group, a lower bound for a matrix-valued modified log-Sobolev inequality is equivalent to a uniform lower bound for all finite dimensional representations. Using combinatorial tools, we obtain computable lower bounds for matrix-valued log-Sobolev inequalities of graph-H\"ormander systems using combinatorial methods.
Cite
@article{arxiv.2006.14578,
title = {Graph H\"ormander Systems},
author = {Haojian Li and Marius Junge and Nicholas LaRacuente},
journal= {arXiv preprint arXiv:2006.14578},
year = {2020}
}