Asymptotics of complete Kahler metrics of finite volume on quasiprojective manifolds

Details Asymptotics of complete Kahler metrics of finite volume on quasiprojective manifolds Asymptotics of complete Kahler metrics of finite volume on quasiprojective manifolds

2011-06-05

arxiv.org/abs/1106.0873v1

Mathematics

Differential Geometry

59 pages

Scientific paper

Let X be a quasiprojective manifold given by the complement of a divisor $\bD$ with normal crossings in a smooth projective manifold $\bX$. Using a natural compactification of $X$ by a manifold with corners $\tX$, we describe the full asymptotic behavior at infinity of certain complete Kahler metrics of finite volume on X. When these metrics evolve according to the Ricci flow, we prove that such asymptotic behaviors persist at later time by showing the associated potential function is smooth up to the boundary on the compactification $\tX$. However, when the divisor $\bD$ is smooth with $K_{\bX}+[\bD]>0$ and the Ricci flow converges to a Kahler-Einstein metric, we show that this Kahler-Einstein metric has a rather different asymptotic behavior at infinity, since its associated potential function is polyhomogeneous with in general some logarithmic terms occurring in its expansion at the boundary.

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