Finite-time blowup for a complex Ginzburg-Landau equation with linear driving

In this paper, we consider the complex Ginzburg--Landau equation $u_t = e^{iθ} [Δu + |u|^αu] + γu$ on ${\mathbb R}^N$, where $α>0$, $γ\in \R$ and $-π/2<θ<π/2$. By convexity arguments we prove that, under certain conditions on $α,θ,γ$, a class of solutions with negative initial energy blows up in finite time.

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