Electronic Journal of Probability

Natural parametrization of SLE: the Gaussian free field point of view

Stéphane Benoist

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We provide another construction of the natural parametrization of SLE$_\kappa $ [9, 8] for $\kappa < 4$. We construct it as the expectation of the quantum time [14], which is a random measure carried by SLE in an ambient Gaussian free field. This quantum time was built as the push forward on the SLE curve of the Liouville boundary measure, which is a natural field-dependent measure supported on the boundary of the domain. We moreover show that the quantum time can be reconstructed as a chaos on any measure on the trace of SLE with the right Markovian covariance property. This provides another proof that the natural parametrization is characterized by its Markovian covariance property.

Article information

Electron. J. Probab., Volume 23 (2018), paper no. 103, 16 pp.

Received: 25 August 2017
Accepted: 4 October 2018
First available in Project Euclid: 18 October 2018

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Zentralblatt MATH identifier

Primary: 60J67: Stochastic (Schramm-)Loewner evolution (SLE) 60K35: Interacting random processes; statistical mechanics type models; percolation theory [See also 82B43, 82C43]

SLE natural parametrization GFF Gaussian free field LQG

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Benoist, Stéphane. Natural parametrization of SLE: the Gaussian free field point of view. Electron. J. Probab. 23 (2018), paper no. 103, 16 pp. doi:10.1214/18-EJP232. https://projecteuclid.org/euclid.ejp/1539828067

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