Conformal welding of independent Gaussian multiplicative chaos measures
Antti Kupiainen
University of Helsinki, FinlandMichael McAuley
University of Helsinki, Finland; Technological University Dublin, IrelandEero Saksman
University of Helsinki, Finland

Abstract
We solve the classical conformal welding problem for a composition of two random homeomorphisms generated by independent Gaussian multiplicative chaos measures with small parameter values. In other words, given two such measures on the boundary of the unit disk we show that there exist conformal maps to complementary domains on the Riemann sphere such that the pushforwards of the normalised measures agree on the common boundary.
Cite this article
Antti Kupiainen, Michael McAuley, Eero Saksman, Conformal welding of independent Gaussian multiplicative chaos measures. J. Eur. Math. Soc. (2026), published online first
DOI 10.4171/JEMS/1777