25 août 2020
Computer-assisted proof of shear-induced chaos in stochastically perturbed Hopf systems
Maxime Breden, Maximilian Engel
Séminaire
25 août 2020 de 10 h 00 à 11 h 00 (heure de Montréal/HNE) Réunion Zoom
Computer-assisted proof of shear-induced chaos in stochastically perturbed Hopf systems
In this talk, we discuss a long-standing conjecture concerning shear-induced chaos in stochastically perturbed systems exhibiting a Hopf bifurcation. Using the recently developed theory of conditioned Lyapunov exponents on bounded domains, we reformulate the problem into the rigorous computation of eigenvectors of some elliptic PDEs, namely the Kolmogorov/Fokker-Planck equations describing distributions of the underlying stochastic process, and are thus able to prove that the first Lyapunov exponent is positive for certain parameter regimes.
