Min forskning fokuserer på problemstillinger innen sannsynlighetsteori og matematisk statistisk mekanikk. Noen nøkkelord som beskriver min pågående forskning er virrevandringer i (dynamiske) tilfeldige omgivelser, interagerende stokastiske prosesser, stokastiske prosesser med uendelig hukommelse og Gibbs mål.

Jeg er del av forskningsgruppen innen Statistikk og Data Science ved Matematisk institutt.

Høst 2026 - STAT110 Grunnkurs i statistikk

Vår 2026 - STAT111 - Statistiske metoder

Høst 2025 - STAT221 - Sannsynlighetsteori

Vår 2025 - STAT111 - Statistiske metoder

Høst 2024: STAT101 - Elementær statistikk

Høst 2023: STAT220 - Stokastiske prosesser

Vår 2023: STAT210 - Statistisk inferensteori

Høst 2022: STAT221 - Sannsynlighetsteori

Høst 2021: STAT101 - Elementær statistikk

Vår 2021: STAT210 - Statistisk inferensteori

Høst 2020: STAT101 - Elementær statistikk

Vitenskapelig artikkel

• Stein Andreas Bethuelsen; Mönch, Christian (2025). [2510.26314] Strict monotonicity of critical points in independent long-range percolation models. (ekstern lenke)
• Stein Andreas Bethuelsen; Malin Palö Forsström (2026). Mixing for Poisson representable processes and consequences for the Ising model and the contact process. (ekstern lenke)
• Stein Andreas Bethuelsen; Daniel Valesin; Gabriel Baptista da Silva (2021). Graph constructions for the contact process with a prescribed critical rate. (ekstern lenke)
• Stein Andreas Bethuelsen; Christian Hirsch; Christian Mönch (2021). Quenched invariance principle for random walks on dynamically averaging random conductances. (ekstern lenke)
• Stein Andreas Bethuelsen; Florian Völlering (2024). Random walks on random walks: non-perturbative results in high dimensions. (ekstern lenke)
• Stein Andreas Bethuelsen; Matthias Birkner; Andrej Depperschmidt et al. (2024). Quenched local limit theorem for a directed random walk on the backbone of a supercritical oriented percolation cluster for d≥1. (ekstern lenke)
• Stein Andreas Bethuelsen; Markus Heydenreich (2016). Law of large numbers for random walks on attractive spin-flip dynamics. (ekstern lenke)
• Stein Andreas Bethuelsen; Matthias Birkner; Andrej Depperschmidt et al. (2023). Local limit theorems for a directed random walk on the backbone of a supercritical oriented percolation cluster. (ekstern lenke)
• Stein Andreas Bethuelsen (2018). The contact process as seen from a random walk. (ekstern lenke)
• Stein Andreas Bethuelsen; Florian Völlering (2025). Limit laws for random walk in a dynamic path-cone mixing random environment. (ekstern lenke)
• Stein Andreas Bethuelsen (2020). On projections of the supercritical contact process: uniform mixing and cutoff phenomenon.. (ekstern lenke)

Konferanseforedrag

• Stein Andreas Bethuelsen (2021). Local limit theorems for a directed random walk on the backbone of a supercritical oriented percolation cluster. (ekstern lenke)
• Stein Andreas Bethuelsen (2021). Random walks in dynamic random environment. (ekstern lenke)
• Stein Andreas Bethuelsen (2023). Random walk on random walks in high dimensions: non-perturbative results. (ekstern lenke)
• Stein Andreas Bethuelsen (2019). Loss of memory for the contact process. (ekstern lenke)
• Stein Andreas Bethuelsen (2019). Loss of memory and the cutoff phenomenon for the contact process. (ekstern lenke)
• Stein Andreas Bethuelsen (2019). On current and future research projects. (ekstern lenke)
• Stein Andreas Bethuelsen (2019). On spatial vs temporal descriptions of stochastic processes. (ekstern lenke)
• Stein Andreas Bethuelsen (2019). On projections of the supercritical contact process: uniform mixing and cutoff phenomenon. (ekstern lenke)
• Stein Andreas Bethuelsen (2024). The zombie-infection model. (ekstern lenke)
• Stein Andreas Bethuelsen (2020). On spatial vs temporal descriptions of stochastic processes. (ekstern lenke)
• Stein Andreas Bethuelsen (2020). One-sided and Two-sided Stochastic Descriptions of the Schonmann Projection. (ekstern lenke)
• Stein Andreas Bethuelsen (2020). Invariance principle for random walks on dynamically averaging random conductances. (ekstern lenke)

Forelesning

• Stein Andreas Bethuelsen (2023). Random walk on random walks in high dimensions: non-perturbative results. (ekstern lenke)
• Stein Andreas Bethuelsen (2019). Modelling complex networks. (ekstern lenke)

Vitenskapelig litteraturgjennomgang

• Stein Andreas Bethuelsen; Noam Berger; Diana Conache et al. (2020). Mini-Workshop: One-sided and Two-sided Stochastic Descriptions. (ekstern lenke)

Se en fullstendig oversikt over publikasjoner i NVA.

Alle mine artikler er tilgjengelige via arXiv:

• Mixing for Poisson representable processes and consequences for the Ising model and the contact process (with Malin Palö Forsström). (ArXiv preprint)
   
• Random walks on random walks: non-perturbative results in high dimensions (with Florian Völlering). (ArXiv preprint)
   
• Quenched local limit theorem for a directed random walk on the backbone of a supercritical oriented percolation cluster for d≥1  (with Matthias Birkner, Andrej Depperschmidt and Timo Schlüter). ArXiv preprint.
   
• Limit laws for random walks in a dynamic path-cone mixing random environment (with Florian Völlering). (ArXiv preprint)
   
• Local limit theorems for a directed random walk on the backbone of a supercritical oriented percolation cluster (with Matthias Birkner, Andrej Depperschmidt and Timo Schlüter) Electronic Journal of Probability, 28, 1-54 (2023) - ArXiv preprint.
   
• Quenched invariance principle for random walks on dynamically averaging random conductances (with Christian Hirchand Christian Mönch) Electronic Communications in Probability (2021) - ArXiv preprint.
   
• Graph constructions for the contact process with a prescribed critical rate (with Gabriel Baptista da Silva and Daniel Valesin) Journal of Theoretical Probability (2021) - ArXiv preprint.
   
• On projections of the supercritical contact process: uniform mixing and cutoff phenomenon. Lecture notes series Genealogies of Interacting Particle Systems, Institute for Mathematical Sciences, National University of Singapore: Volume 38, 315--340, 2020. (ArXiv preprint)
   
• One-sided continuity properties for the Schonmann projection (with Diana Conache) Journal of Statistical Physics, 172(4), 1147--1163, 2018. (ArXiv preprint)
   
• The contact process as seen from a random walk ALEA, Lat. Am. J. Probab. Math. Stat. 15, 571–585, 2018.
   
• Stochastic domination in space-time for the contact process (with Rob van den Berg). Random Structures Algorithms, 53(2), 221–237, 2018. (ArXiv preprint)
   
• Law of large numbers for random walks on attractive spin-flip dynamics (with Markus Heydenreich) Stochastic Processes and Applications 127(7), 2346-2372, 2017. (ArXiv preprint)
   
• Absolute continuity and weak uniform mixing for random walk in dynamic random environment (with Florian Völlering). Electron. J. Probab. 21, no. 71, 1-32, 2016.

Stein Andreas Bethuelsen is an Associate Professor at the Department of Mathematics at the University of Bergen, affiliated with the Statistics and Data Science group. He has previously worked at the University of Stavanger and the Technical University of Munich. He holds a PhD from the University of Leiden.

His main field of research is probability theory. His work focusses on the rigorous mathematical theory of certain stochastic processes, often with ties to questions originating from statistical mechanics or biology, and often evolving on an underlying network structure. Some keywords describing his current research are random walks in (dynamic) random environment, interacting particle systems, chains of infinite order and Gibbs measures.

Stein Andreas has been a member of the German-based DFG-Scientific Network Stochastic Processes on Evolving Networks (ekstern lenke). He is currently a member of the EU Cost-action mSpace (ekstern lenke), dedicated to developing a unified mathematical framework for multiscale systems.