On Blow-up criterion for the Nonlinear Schrödinger Equation

The blowup is studied for the nonlinear Schrödinger equation $iu_{t}+Δu+ |u|^{p-1}u=0$ with $p$ is odd and $p\ge 1+\frac 4{N-2}$ (the energy-critical or energy-supercritical case). It is shown that the solution with negative energy $E(u_0)<0$ blows up in finite or infinite time. A new proof is also presented for the previous result in \cite{HoRo2}, in which a similar result but more general in a case of energy-subcritical was shown.

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