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Finite-time Lyapunov exponents for SPDEs with fractional noise
Alexandra Blessing</name> <arxiv:affiliation>Neamţu</arxiv · 2023-09-21 · via math.PR updates on arXiv.org

We estimate the finite-time Lyapunov exponents for a stochastic partial differential equation driven by a fractional Brownian motion (fbm) with Hurst index $H\in(0,1)$ close to a bifurcation of pitchfork type. We characterize regions depending on the distance from bifurcation, the Hurst parameter of the fbm and the noise strength where finite-time Lyapunov exponents are positive and thus indicate a change of stability. The results on finite-time Lyapunov exponents are novel also for SDEs perturbed by fractional noise.

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