Journal of Differential Geometry

Sobolev Metrics on the Manifold of All Riemannian Metrics

Martin Bauer, Philipp Harms, and Peter W. Michor

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On the manifold $\mathcal{M}(M)$ of all Riemannian metrics on a compact manifold $M$, one can consider the natural $L^2$-metric as described first by D.G. Ebin, The manifold of Riemannian metrics. In this paper we consider variants of this metric, which in general are of higher order. We derive the geodesic equations; we show that they are well-posed under some conditions and induce a locally diffeomorphic geodesic exponential mapping. We give a condition when Ricci flow is a gradient flow for one of these metrics.

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J. Differential Geom., Volume 94, Number 2 (2013), 187-208.

First available in Project Euclid: 1 May 2013

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Bauer, Martin; Harms, Philipp; Michor, Peter W. Sobolev Metrics on the Manifold of All Riemannian Metrics. J. Differential Geom. 94 (2013), no. 2, 187--208. doi:10.4310/jdg/1367438647.

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