Well-posedness and large deviations for 2D stochastic Navier–Stokes equations with jumps

• Published in: Journal of the European Mathematical Society : JEMS Vol. 25; no. 8; pp. 3093 - 3176
• Main Authors: Brzeźniak, Zdzisław, Peng, Xuhui, Zhai, Jianliang
• Format: Journal Article
• Language: English
• Published: 01.01.2023
• ISSN: 1435-9855; 1435-9863
• DOI: 10.4171/jems/1214

The aim of this paper is threefold. Firstly, we prove the existence and uniqueness of a global strong (in both the probabilistic and the PDE senses) \mathrm{H}^{1}_2 -valued solution to the 2D stochastic Navier–Stokes equations (SNSEs) driven by a multiplicative Lévy noise under the natural Lipschitz condition on balls and linear growth assumptions on the jump coefficient. Secondly, we prove a Girsanov-type theorem for Poisson random measures and apply this result to a study of the wellposedness of the corresponding stochastic controlled problem for these SNSEs. Thirdly, we apply these results to establish a Freidlin–Wentzell-type large deviation principle for the solutions of these SNSEs by employing the weak convergence method introduced by Budhiraja et al. (2011, 2013).