Some remarks about an effective description of high-frequency wave-packet propagation

Anna Logioti, Xin Meng, Guido Schneider

We consider systems of the form $ \partial_τ \mathcal U + \mathcal A(\partial_ξ) \mathcal U + \frac{1}{\varepsilon} \mathcal E \mathcal U = \mathcal T_{2}( \mathcal U , \mathcal U…