A route to thermalization in the $\alpha$-Fermi-Pasta-Ulam system

Miguel Onorato, Lara Vozella, Davide Proment +1

We study the original $\alpha$-Fermi-Pasta-Ulam (FPU) system with $N=16,32$ and $64$ masses connected by a nonlinear quadratic spring. Our approach is based on resonant wave-wave intera…