On the role of 5-wave resonances in the nonlinear dynamics of the Fermi-Pasta-Ulam-Tsingou lattice

Tiziana Comito, Matteo Lotriglia, Miguel D. Bustamante

We study the dynamics of the $(\alpha +\beta )$ Fermi-Pasta-Ulam-Tsingou lattice (FPUT lattice, for short) for an arbitrary number $N$ of interacting particles, in regimes of small enough non…