Long-time existence for semi-linear beam equations on irrational tori

Joackim Bernier, Roberto Feola, Benoît Grébert +1

We consider the semi-linear beam equation on the d dimensional irrational torus with smooth nonlinearity of order n -- 1 with n $\ge$ 3 and d $\ge$ 2. If $\epsilon$ $\ll$ 1 is the size of…