On monotonicity of heat kernels: a new example and counterexamples

Fuente: arXiv
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Autori principali: Burchard, Almut, Martínez, Ángel D.
Natura: Preprint
Pubblicazione: 2025
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author Burchard, Almut
Martínez, Ángel D.
author_facet Burchard, Almut
Martínez, Ángel D.
contents We discover a new, non-radial example of a manifold whose heat kernel decreases monotonically along all minimal geodesics. We also classify the flat tori with this monotonicity property. Furthermore, we show that for a generic metric on any smooth manifold the monotonicity property fails at large times. This answers a recent question of Alonso-Orán, Chamizo, Martínez, and Mas.
format Preprint
id arxiv_https___arxiv_org_abs_2502_08212
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On monotonicity of heat kernels: a new example and counterexamples
Burchard, Almut
Martínez, Ángel D.
Differential Geometry
Analysis of PDEs
Classical Analysis and ODEs
We discover a new, non-radial example of a manifold whose heat kernel decreases monotonically along all minimal geodesics. We also classify the flat tori with this monotonicity property. Furthermore, we show that for a generic metric on any smooth manifold the monotonicity property fails at large times. This answers a recent question of Alonso-Orán, Chamizo, Martínez, and Mas.
title On monotonicity of heat kernels: a new example and counterexamples
topic Differential Geometry
Analysis of PDEs
Classical Analysis and ODEs
url https://arxiv.org/abs/2502.08212