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Strong averaging along foliated Lévy diffusions with heavy tails on compact leaves (1507.07530v3)

Published 27 Jul 2015 in math.PR

Abstract: This article shows a strong averaging principle for diffusions driven by discontinuous heavy-tailed L\'evy noise, which are invariant on the compact horizontal leaves of a foliated manifold subject to small transversal random perturbations. We extend a result for such diffusions with exponential moments and bounded, deterministic perturbations to diffusions with polynomial moments of order $p\geq 2$, perturbed by deterministic and stochastic integrals with unbounded coefficients and polynomial moments. The main argument relies on a result of the dynamical system for each individual jump increments of the corresponding canonical Marcus equation. The example of L\'evy rotations on the unit circle subject to perturbations by a planar L\'evy-Ornstein-Uhlenbeck process is carried out in detail.

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