Ricci flow and the metric completion of the space of Kahler metrics

Details Ricci flow and the metric completion of the space of Kahler metrics Ricci flow and the metric completion of the space of Kahler metrics

2011-02-18

arxiv.org/abs/1102.3787v1

Mathematics

Differential Geometry

Scientific paper

We consider the space of Kahler metrics as a Riemannian submanifold of the space of Riemannian metrics, and study the associated submanifold geometry. In particular, we show that the intrinsic and extrinsic distance functions are equivalent. We also determine the metric completion of the space of Kahler metrics, making contact with recent generalizations of the Calabi-Yau Theorem due to Dinew, Guedj-Zeriahi, and Kolodziej. As an application, we obtain a new analytic stability criterion for the existence of a Kahler-Einstein metric on a Fano manifold in terms of the Ricci flow and the distance function. We also prove that the Kahler-Ricci flow converges as soon as it converges in the metric sense.

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