Archive: Stochastik Rhein-Main

21.06.2024 Rhein-Main-Kolloquium

Stein Andreas Bethuelsen (University of Bergen)

RMK Mainz

Assign to each lattice point of Z^d a Poissonian number of particles and let each of them evolve independently as discrete-time simple random walks. On top of this dynamically evolving environment we consider an additional random walk whose jump transition depends on whether there are particles present at its location or not. This is the so-called random walk on random walks model. Previous studies have concluded that this model on Z^d, d\geq1, has a diffusive scaling when the density of particles is sufficiently low or sufficiently high. We will argue that this holds for all densities for the model on Z^d with d\geq 5. Our proof of this rely on a novel domination result for the dynamic environment that, when combined with coupling arguments and standard random walk estimates, yield uniform mixing bounds for the so-called local environment process. Based on joint work, partly in progress, with Florian Völlering (University of Leipzig) Read more

19.01.2018 Rhein-Main-Kolloquium

Peter Mörters (Universität Köln)
Steffen Dereich (Universität Münster)

tba

03.12.2021 Rhein-Main-Kolloquium

Nina Gantert (Technische Universität München)
Paolo Dai Pra (Università degli Studi di Verona)

RMK Frankfurt - ONLINE EVENT

12.02.2021 Rhein-Main-Kolloquium

Rongfeng Sun (NUS, Singapore)
Nikos Zygouras (Warwick)

RMK Mainz - ONLINE

07.07.2017 Rhein-Main-Kolloquium

Mikhail Lifshits ((St. Petersburg))

Energy saving approximation of random processes.

07.07.2017 Rhein-Main-Kolloquium

Mikhail Lifshits ((St. Petersburg))
Vitali Wachtel ((Universität Augsburg))

Mikhail Lifshits (St. Petersburg): “Energy saving approximation of random processes”; Vitali Wachtel (Augsburg):First-passage times over moving boundaries for random walks with non-identically distributed increments.

06.12.2019 Rhein-Main-Kolloquium

Simone Warzel (TU München)
Matthias Erbar (Uni Bonn)

RMK Frankfurt

14.06.2019 Rhein-Main-Kolloquium

Sebastian Andres (University of Cambridge)
Martin Slowik (TU Berlin)

Sebastian Andres: Local Limit Theorems for the Random Conductance Model | Martin Slowik: Random walks among random conductances as rough paths

09.07.2021 Rhein-Main-Kolloquium

Pascal Maillard (Université de Toulouse)
Markus Heydenreich (LMU München)

RMK Mainz ONLINE

23.06.2023 Rhein-Main-Kolloquium

Mark Sellke (Harvard University)
Steffen Polzer (Université de Genève)

RMKS Darmstadt 23. Juni 2023

03.02.2017 Rhein-Main-Kolloquium

Mark Podolskij (Universität Aarhus)
Mathieu Rosenbaum (Ecole Polytechnique, Paris)

RMK Mainz Winter 2016/17

22.01.2021 Rhein-Main-Kolloquium

Maria Deijfen (Stockholm University)
Siva Athreya (Indian Statistical Institute, Bengaluru)

RMK Darmstadt

26.01.2018 Rhein-Main-Kolloquium

Wolfgang König (WIAS/TU Berlin)
Margherita Disertori (Universität Bonn)

RMK Frankfurt Winter 2017/18

13.01.2023 Rhein-Main-Kolloquium

Marcel Ortgiese (University of Bath)

RMKS Frankfurt 13.01.2023

22.06.2018 Rhein-Main-Kolloquium

Julien Berestycki (University of Oxford)
Louigi Addario-Berry (McGill University Montreal)

RMK Frankfurt SoSe 2018

01.07.2022 Rhein-Main-Kolloquium

Julian Gerstenberg (Goethe-Universität Frankfurt)
Jonathan Warren (University of Warwick)

RMKS Frankfurt 01.07.2022

02.06.2023 Rhein-Main-Kolloquium

Torben Krüger (FAU)
Johannes Alt (Universität Bonn)

RMKS Mainz 2. Juni 2023

21.06.2024 Rhein-Main-Kolloquium

Jiří Černý (Universität Basel)

RMK Mainz

In the presentation, I will consider two related models: the one-dimensional branching Brownian motion in random environment (BBMRE), and the randomized F-KPP equation (rFKPP). I will discuss the following natural questions: (1) Given a typical realisation of the environment, are the distributions of the maximal particle of the BBMRE (re-centred around their medians) tight? (2) For the same environment, is the width of the front of the "travelling-wave" solution to rFKPP uniformly bounded in time? Surprisingly, it turns out that the answers to these questions can be different. This highlights that, when compared to the settings of homogeneous branching Brownian motion and the F-KPP equation in a homogeneous environment, the introduction of a random environment leads to a much more intricate behaviour. The presentation is based on joint works with A. Drewitz, L. Schmitz, and P. Oswald. Read more

24.11.2023 Rhein-Main-Kolloquium

Véronique Gayrard (HCM Marseille)
Jean-Christophe Mourrat (ENS Lyon)

RMKS 24.11.2023 Mainz

03.05.2019 Rhein-Main-Kolloquium

Herbert Spohn (TU München und Uni. Bonn)
Lisa Hartung (Johannes Gutenberg-Universität Mainz)

Herbert Spohn (TU München | Uni. Bonn) Gibbs measures of the Toda chain and random matrix theory | Lisa Hartung (Uni. Mainz) The Ginibre charactzeristic polynomial and Gaussian Multiplicative Chaos

Archive Workshops

Events

RMK Mainz

tba

RMK Frankfurt - ONLINE EVENT

RMK Mainz - ONLINE

Energy saving approximation of random processes.

Mikhail Lifshits (St. Petersburg): “Energy saving approximation of random processes”; Vitali Wachtel (Augsburg):First-passage times over moving boundaries for random walks with non-identically distributed increments.

RMK Frankfurt

Sebastian Andres: Local Limit Theorems for the Random Conductance Model | Martin Slowik: Random walks among random conductances as rough paths

RMK Mainz ONLINE

RMKS Darmstadt 23. Juni 2023

RMK Mainz Winter 2016/17

RMK Darmstadt

RMK Frankfurt Winter 2017/18

RMKS Frankfurt 13.01.2023

RMK Frankfurt SoSe 2018

RMKS Frankfurt 01.07.2022

RMKS Mainz 2. Juni 2023

RMK Mainz

RMKS 24.11.2023 Mainz

Herbert Spohn (TU München | Uni. Bonn) Gibbs measures of the Toda chain and random matrix theory | Lisa Hartung (Uni. Mainz) The Ginibre charactzeristic polynomial and Gaussian Multiplicative Chaos

Overview

Contact