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Geometric functionals of fractal percolation

Published online by Cambridge University Press:  03 December 2020

Michael A. Klatt*
Affiliation:
Princeton University
Steffen Winter*
Affiliation:
Karlsruhe Institute of Technology
*
*Postal address: Department of Physics, Princeton University, Princeton, New Jersey 08544, USA. Email: mklatt@princeton.edu
**Postal address: Karlsruhe Institute of Technology, Department of Mathematics, 76128 Karlsruhe, Germany. Email: steffen.winter@kit.edu

Abstract

Fractal percolation exhibits a dramatic topological phase transition, changing abruptly from a dust-like set to a system-spanning cluster. The transition points are unknown and difficult to estimate. In many classical percolation models the percolation thresholds have been approximated well using additive geometric functionals, known as intrinsic volumes. Motivated by the question of whether a similar approach is possible for fractal models, we introduce corresponding geometric functionals for the fractal percolation process F. They arise as limits of expected functionals of finite approximations of F. We establish the existence of these limit functionals and obtain explicit formulas for them as well as for their finite approximations.

Type
Original Article
Copyright
© Applied Probability Trust 2020

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