Conformal compactification of asymptotically locally hyperbolic metrics II: Weakly ALH metrics

Details Conformal compactification of asymptotically locally hyperbolic metrics II: Weakly ALH metrics Conformal compactification of asymptotically locally hyperbolic metrics II: Weakly ALH metrics

2011-09-23

arxiv.org/abs/1109.5096v1

Mathematics

Differential Geometry

53 pages, no figure

Scientific paper

In this paper we pursue the work initiated in \cite{Bahuaud, BahuaudGicquaud}: study the extent to which conformally compact asymptotically hyperbolic metrics can be characterized intrinsically. We show how the decay rate of the sectional curvature to -1 controls the H\"older regularity of the compactified metric. To this end, we construct harmonic coordinates that satisfy some Neumann-type condition at infinity. Combined with a new integration argument, this permits us to recover to a large extent our previous result without any decay assumption on the covariant derivatives of the Riemann tensor. We believe that our result is optimal.

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