Calculus of Variations and Geometric Measure Theory
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T. Jin - A. Maalaoui - L. Martinazzi - J. Xiong

Existence and asymptotics for solutions of a non-local Q-curvature equation in dimension three

created by martinazz on 17 Jul 2018



Inserted: 17 jul 2018

Year: 2013

ArXiv: 1309.4299 PDF


We study conformal metrics on $R^3$, i.e., metrics of the form $g_u=e^{2u}
^2$, which have constant $Q$-curvature and finite volume. This is equivalent to studying the non-local equation $$ (-\Delta)\frac32 u = 2 e{3u}$$ in $R^3$ $$V:=\int{\mathbb{R}3}e{3u}dx<\infty,$$ where $V$ is the volume of $g_u$. Adapting a technique of A. Chang and W-X. Chen to the non-local framework, we show the existence of a large class of such metrics, particularly for $V\le 2\pi^2=
$. Inspired by previous works of C-S. Lin and L. Martinazzi, who treated the analogue cases in even dimensions, we classify such metrics based on their behavior at infinity.

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