Entropy of logarithmic modes
Spectral Theory
2024-08-07 v4 Mathematical Physics
Dynamical Systems
math.MP
Abstract
Let be a compact, boundaryless, Riemannian manifold whose geodesic flow on its unit sphere bundle is Anosov. Consider the (semiclassical) Laplace-Beltrami operator on . Let . We study the semiclassical measures of quasimodes spectrally supported in intervals of width , a critical-type regime when considering ``delocalization". We derive a lower bound for the Kolmogorov-Sinai entropy of that depends explicitly on , in the spirit of that given by Ananthamaran-Koch-Nonnenmacher.
Cite
@article{arxiv.2102.13528,
title = {Entropy of logarithmic modes},
author = {Suresh Eswarathasan},
journal= {arXiv preprint arXiv:2102.13528},
year = {2024}
}
Comments
Result is now general with an explicit dependence on $\epsilon$ established in the lower bound. 34 pages. All comments welcome