Stochastic nonlinear wave dynamics on compact surfaces

نویسندگان

چکیده

We study the Cauchy problem for nonlinear wave equations (NLW) with random data and/or stochastic forcing on a two-dimensional compact Riemannian manifold without boundary. (i) first defocusing damped NLW driven by additive space-time white noise, and initial distributed according to Gibbs measure. By introducing suitable space-dependent renormalization, we prove local well-posedness of renormalized equation. Bourgain’s invariant measure argument then allows us establish almost sure global invariance NLW. (ii) Similarly, (without or damping), same results as in previous setting. (iii) Lastly, damping. dependent its deterministic all subcritical spaces.

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ژورنال

عنوان ژورنال: Annales Henri Lebesgue

سال: 2023

ISSN: ['2644-9463']

DOI: https://doi.org/10.5802/ahl.163