Conformal metrics on $R^{2m}$ with constant Q-curvature, prescribed volume and asymptotic behavior

Abstract

We study the solutions $u\in C^{\infty }(R^{2m})$ of the problem $(-\Delta {)}^{m}u=Q{e}^{2mu}$, where $Q=\pm (2m-1)!$, and $V:={\int }_{R^{2m}}{e}^{2mu}dx<\infty$, particularly when $m>1$. This corresponds to finding conformal metrics $g_u:=e^{2u}|dx{|}^2$ on $R^{2m}$ with constant Q-curvature $Q$ and finite volume $V$. Extending previous works of Chang-Chen, and Wei-Ye, we show that both the value $V$ and the asymptotic behavior of $u(x)$ as $|x|\to \infty$ can be simultaneously prescribed, under certain restrictions. When $Q=(2m-1)!$ we need to assume $V<vol(S^{2m})$, but surprisingly for $Q=-(2m-1)!$ the volume $V$ can be chosen arbitrarily.

19 pages

Cited by in corpus (2)

• Fractional Adams-Moser-Trudinger type inequalities
• Solutions of Liouville equations with non-trivial profile in dimensions 2 and 4