2 problems

Consider the nonlinear wave equation … with $p\in\mathbb{N}$ and $p\geqslant3$. Expand the field in spherical harmonics, … At fixed finite radius $r$, the modes are expected to dec…

Late-time asymptotics conjecture. If $0<|qe|<\frac{1}{2}$, then a solution $\phi$ with generic, regular initial data obeys the asymptotics stated in the paper's sharp asymptotic re…