November 2024 On natural measures of SLE- and CLE-related random fractals
Gefei Cai, Xinyi Li
Author Affiliations +
Ann. Inst. H. Poincaré Probab. Statist. 60(4): 2297-2327 (November 2024). DOI: 10.1214/23-AIHP1412

Abstract

In this paper, we construct the natural measure on several types of random fractals, namely, the cut points and boundary-touching points of the Schramm–Loewner Evolution (SLE), as well as the pivotal points and the carpet/gasket of the Conformal Loop Ensemble (CLE), and then prove the uniqueness up to scalar multiples in each case. As an application, we show the equivalence between natural measures defined in this paper for CLE6 pivotal points and gasket and scaling limits of their respective discrete analogs (i.e., the pivotal and area measure of the critical planar Bernoulli percolation constructed in [Garban-Pete-Schramm, J. Amer. Math. Soc., 2013]). Although the existence and uniqueness for the natural measures of the CLE carpet and gasket have already been proved in [Miller-Schoug, arXiv:2201.01748], we provide a different argument via the coupling of CLE and Liouville quantum gravity (LQG).

Dans cet article, nous construisons la mesure naturelle sur plusieurs fractales aléatoires, à savoir les points de coupure et les points bord-touchants de l’evolution de Schramm–Loewner (SLE), les points pivots et le tapis/tamis de l’ensemble des boucles conformes (CLE). Puis nous prouvons l’unicité, à une constante multiplicative près, dans chaque cas. Comme application, nous montrons également l’équivalence entre les mesures naturelles définies dans cet article pour les points pivots et le tamis du CLE6 et les limites d’échelle de leurs analogues discrets respectifs (c’est-à-dire la mesure pivot et la mesure de l’aire de la percolation de Bernoulli planaire critique construite dans [Garban-Pete-Schramm, J. Amer. Math. Soc., 2013]). Bien que l’existence et l’unicité des mesures naturelles du tapis et du tamis du CLE aient déjà été prouvées dans [Miller-Schoug, arXiv:2201.01748], nous proposons ici un argument différent via le couplage du CLE et la gravité quantique de Liouville (LQG).

Funding Statement

The authors thank the National Key R&D Program of China (No. 2021YFA1002700 and No. 2020YFA0712900) and NSFC (No. 12071012).

Acknowledgements

We thank Xin Sun for suggesting this problem and for helpful discussions during various stages of this project. We thank an anonymous referee for carefully reading an earlier draft of this work and giving numerous valuable suggestions. In addition, we also thank Tim Mesikepp for suggestions on the polishing of the language.

Citation

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Gefei Cai. Xinyi Li. "On natural measures of SLE- and CLE-related random fractals." Ann. Inst. H. Poincaré Probab. Statist. 60 (4) 2297 - 2327, November 2024. https://doi.org/10.1214/23-AIHP1412

Information

Received: 16 May 2022; Revised: 11 May 2023; Accepted: 12 June 2023; Published: November 2024
First available in Project Euclid: 19 November 2024

Digital Object Identifier: 10.1214/23-AIHP1412

Subjects:
Primary: 60G57 , 60J67
Secondary: 28A80

Keywords: Liouville quantum gravity , Schramm–Loewner evolution

Rights: Copyright © 2024 Association des Publications de l’Institut Henri Poincaré

Vol.60 • No. 4 • November 2024
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