Univ.-Prof. Dr. Ecaterina Sava-Huss
Research Group

About us: We are a research group based in Innsbruck, in the middle of the Austrian Alps. The Department of Mathematics at the University of Innsbruck provides an inspiring research environment in probability theory, combined with the unique advantage of living in the middle of the Alps — a city that combines rich cultural life with direct access to world-class hiking and skiing.

Ecaterina Sava-Huss

University Professor, PI of the group.

Research interests: random walks on infinite graphs and groups, branching random walks, aggregation models (internal and external DLA, rotor aggregation, divisible sandpiles), urn models, Abelian sandpiles.

Publications and preprints.

Hanna Oppelmayer

Postdoctoral researcher.

Research interests: random walks on groups and their boundaries (Furstenberg–Poisson boundary), entropy of random walks, stationary ergodic measure spaces. See the webpage of Hanna. Hanna has an FWF Esprit Fellowship since November 2025.

Publications and preprints.

Nicolas Bouchot

Postdoctoral researcher.

Research interests: polymer model randomly penalized by its spatial extension, geometry of the simple random walk confined in large domains.

Publications and preprints.

Martin Klötzer

PhD Student since June 2024.

Research interests: min and max displacement, speed, and asymptotic entropy for branching random walks; boundaries of random walks; stochastic abelian networks.

Publications and preprints.

Julia Überbacher

PhD Student since October 2025.

Research interests: (stochastic) abelian sandpiles, sandpile Markov chains on fractals, quantum random walks. Master thesis on Sandpile Groups at the University of Innsbruck, Austria.

Publications and preprints

Nadia Fellin

PhD Student since March 2026.

Research interests: branching random walks, locally Markov walks, stochastic Abelian sandpiles.
Master thesis on Branching random walks at the University of Innsbruck, Austria.