Published Paper

Inserted: 21 mar 2010
Last Updated: 17 jul 2018

Journal: Commun. Contemp. Math.
Volume: 13
Pages: 533-551
Year: 2011

Abstract:

We discuss compactness, blow-up and quantization phenomena for the prescribed $Q$-curvature equation $(-\Delta)^m u_k=V_ke^{2mu_k}$ on open domains of $\R{2m}$. Under natural integral assumptions we show that when blow-up occurs, up to a subsequence $$\lim_{k\to \infty}\int_{\Omega0} V_ke^{2mu_{k}dx=L\Lambda1,$$} where $\Omega_0\subset\subset\Omega$ is open and contains the blow-up points, $L\in\mathbb{N}$ and $\Lambda_1:=(2m-1)!\vol(S^{2m})$ is the total $Q$-curvature of the round sphere $S^{2m}$. Moreover, under suitable assumptions, the blow-up points are isolated. We do not assume that $V$ is positive.

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