Septic NLW/NLKG on R2
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- Scaling is sc = 2 / 3.
- LWP for
by Strichartz estimates (LbSo1995)
- For s < sc one has instantaneous blowup in the focusing case, and unbounded growth of Hs norms in the defocusing case (CtCoTa-p2)
- GWP for s > 6 / 7 in the defocusing case (Fo-p)
- For
this follows from energy conservation.