Self-similarity and spectral asymptotics for the continuum random tree

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Abstract

We use the random self-similarity of the continuum random tree to show that it is homeomorphic to a post-critically finite self-similar fractal equipped with a random self-similar metric. As an application, we determine the mean and almost-sure leading order behaviour of the high frequency asymptotics of the eigenvalue counting function associated with the natural Dirichlet form on the continuum random tree. We also obtain short time asymptotics for the trace of the heat semigroup and the annealed on-diagonal heat kernel associated with this Dirichlet form.

PACS

35P20
28A80
31C25
58G25
60J35

Keywords

Continuum random tree
Self-similar fractal
Spectral asymptotics
Heat kernel

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