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Critical one-arm probability for the metric Gaussian free field in low dimensions

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arxiv 2405.17417 v1 pith:2DS43LVS submitted 2024-05-27 math.PR math-phmath.MP

classification math.PRmath-phmath.MP
keywords alphacasecriticalfieldfracfreefunctiongaussian
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abstract

We investigate the bond percolation model on transient weighted graphs ${G}$ induced by the excursion sets of the Gaussian free field on the corresponding metric graph. Under the sole assumption that its sign clusters do not percolate, we derive an extension of Lupu's formula for the two-point function at criticality. We then focus on the low-dimensional case $0< \nu < \frac{\alpha}{2}$, where $\alpha$ governs the polynomial volume growth of $G$ and $\nu$ the decay rate of the Green's function on $G$. In particular, this includes the benchmark case ${G}=\mathbb{Z}^3$, for which $\alpha=3$ and $\nu= \alpha-2=1$. We prove under these assumptions that the critical one-arm probability decays with distance $R$ like $R^{-\frac{\nu}{2}}$, up to multiplicative constants.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A switching identity for cable-graph loop soups and Gaussian free fields

    math.PR 2025-02 accept novelty 8.0 of 10

    Conditioning two cable-graph points to lie in the same Brownian loop-soup cluster adds an odd-numbered Poisson cloud of Brownian excursions between them, yielding an exact law for the conditional cluster and its GFF analogue.

  2. Cluster volumes for the Gaussian free field on metric graphs

    math.PR 2024-12 accept novelty 8.0 of 10

    Critical clusters of the Gaussian free field on Z^3, Z^4 and Z^5 have tail exponent delta=(d+2)/(d-2) and largest-cluster dimension (d+2)/2, confirming Werner's conjectures.

  3. Incipient infinite clusters and volume growth for Gaussian free fields and loop soups on metric graphs

    math.PR 2024-12 accept novelty 8.0 of 10

    For the critical GFF level set and loop soup on Z^d with d != 6, four IIC definitions coincide, and the conditioned cluster volume in B(M) is of order M^{min(d/2+1, 4)}.

  4. Quasi-multiplicativity and regularity for metric graph Gaussian free fields

    math.PR 2024-12 accept novelty 8.0 of 10

    For all d≥3 except d=6, the probability that the critical metric-graph GFF level set connects two sets across an annulus equals, up to constants, N^{(6-d)∧0} times the product of the two one-sided connection probabilities.

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