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We study the spectral and diffusive properties of the wired minimal spanningforest (WMSF) on the Poisson-weighted infinite tree (PWIT). Let $M$ be the treecontaining the root in the WMSF on the PWIT and $(Y_n)_{n\geq0}$ be a simplerandom walk on $M$ starting from the root. We show that almost surely $M$ has$\mathbb{P}[Y_{2n}=Y_0]=n^{-3/4+o(1)}$ and$\mathrm{dist}(Y_0,Y_n)=n^{1/4+o(1)}$ with high probability. That is, thespectral dimension of $M$ is $\frac{3}{2}$ and its typical displacementexponent is $\frac{1}{4}$, almost surely. These confirm Addario-Berry'spredictions in arXiv:1301.1667.

The wired minimal spanning forest on the Poisson-weighted infinite tree