Multiscale analysis for traveling-pulse solutions to the stochastic FitzHugh–Nagumo equations

K Eichinger, MV Gnann, C Kuehn - The Annals of Applied …, 2022 - projecteuclid.org
We investigate the stability of traveling-pulse solutions to the stochastic FitzHugh–Nagumo
equations with additive noise. Special attention is given to the effect of small noise on the …

Bifurcations and early-warning signs for spdes with spatial heterogeneity

P Bernuzzi, C Kuehn - Journal of Dynamics and Differential Equations, 2023 - Springer
Bistability is a key property of many systems arising in the nonlinear sciences. For example,
it appears in many partial differential equations (PDEs). For scalar bistable reaction …

Stochastic resonance in stochastic PDEs

N Berglund, R Nader - … and Partial Differential Equations: Analysis and …, 2023 - Springer
We consider stochastic partial differential equations (SPDEs) on the one-dimensional torus,
driven by space-time white noise, and with a time-periodic drift term, which vanishes on two …

Early-Warning Signs for SPDEs with Continuous Spectrum

P Bernuzzi, A Düx, C Kühn - arXiv preprint arXiv:2307.14080, 2023 - arxiv.org
In this work, we study early-warning signs for stochastic partial differential equations
(SPDEs), where the linearization around a steady state has continuous spectrum. The …

Sample paths estimates for stochastic fast-slow systems driven by fractional brownian motion

K Eichinger, C Kuehn, A Neamţu - Journal of Statistical Physics, 2020 - Springer
We analyze the effect of additive fractional noise with Hurst parameter H> 1/2 H> 1/2 on fast-
slow systems. Our strategy is based on sample paths estimates, similar to the approach by …

On the dynamics of stochastic heat equations

A Pein - 2021 - mediatum.ub.tum.de
The main objective of this thesis is to analyse the dynamical behaviour of different linear and
non-linear stochastic heat equations using analytical and probabilistic techniques. We begin …