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Curvature of the Virasoro-Bott group

Peter W. Michor·Tudor Ratiu
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Abstract

We consider a natural Riemannian metric on the infinite dimensional manifold of all embeddings from a manifold into a Riemannian manifold, and derive its geodesic equation in the case $\Emb(\Bbb R,\Bbb R)$ which turns out to be Burgers' equation. Then we derive the geodesic equation, the curvature, and the Jacobi equation of a right invariant Riemannian metric on an infinite dimensional Lie group, which we apply to $\Diff(\Bbb R)$, $\Diff(S^1)$, and the Virasoro-Bott group. Many of these results are well known, the emphasis is on conciseness and clarity.

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Peter W. Michor, Tudor Ratiu. 1998-01-26. Curvature of the Virasoro-Bott group. https://arxiv.org/abs/math/9801115

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