1. Complete regularity and strong attractor for the strongly damped wave equation with critical nonlinearities on R3.
- Author
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Ding, Pengyan and Yang, Zhijian
- Abstract
The paper investigates the well-posedness and the complete regularity of the weak solutions, and the existence of strong global attractor for the strongly damped wave equation with critical nonlinearities on R 3 : u tt - Δ u - Δ u t + h (x , u t) + g (x , u) = f (x) . We show that when both nonlinearities h (x , u t) and g(x, u) are of at most critical growth, (1) the model is well-posed and its weak solution is of higher complete regularity as t > 0 , which ensures that the weak solution is exactly the strong one; (2) the related dynamical system (S (t) , H) possesses a strong (H , H 2) -global attractor of optimal topological property, which is also the standard global attractor of optimal regularity of S(t) in H . The method developed here allows breaking through the long-standing restriction for this model on R 3 : the partial regularity of the weak solutions and almost linearity of h (x , u t) , and helps obtaining the optimal complete regularity of the weak solutions and the existence of strong global attractor. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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