Weak KAM Theory in Quasi-periodic Hamiltonian Systems

Xun Niu, Yong Li

Published 2023-12-03Version 1

We investigate the dynamics of quasi-periodic Hamiltonian systems from the perspective of weak KAM theory. We obtain that the limit $u$, which obtained from convergence of a sequence of functional minimizers, satisfies Hamilton-Jacobi equations in a weak sense. This is the so-called weak KAM solutions. Meanwhile, we also get a minimal measures $\mu$.Finally, we discuss the existence and uniqueness of smooth solutions to a kind of divergence equation by the continuation method, which is crucial to our approach.