Published Paper
Inserted: 6 feb 2009
Last Updated: 17 jul 2018
Journal: Math. Z.
Volume: 263
Pages: 307-329
Year: 2009
Abstract:
We classify the solutions to the equation (- \Delta)m u=(2m-1)!e{2mu} on
R{2m} giving rise to a metric g=e{2u}g{R{2m}} with finite total
$Q$-curvature in terms of analytic and geometric properties. The analytic
conditions involve the growth rate of u and the asymptotic behaviour of \Delta
u(x) as
x
\to \infty. As a consequence we give a geometric characterization in
terms of the scalar curvature of the metric e{2u}g{R{2m}} at infinity, and
we observe that the pull-back of this metric to $S^{2m}$ via the stereographic
projection can be extended to a smooth Riemannian metric if and only if it is
round.
Keywords: Q-curvature, Paneitz operator
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