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Riemannian geometry of Diff(S1)/S1 and representations of the Virasoro algebra

M. Gordina, P. Lescot

math-pharXiv:math-ph/0510092

Abstract

The main result of the paper is a computation of the Ricci curvature of /S1. Unlike earlier results on the subject, we do not use the Kähler structure symmetries to compute the Ricci curvature, but rather rely on classical finite-dimensional results of Nomizu et al on Riemannian geometry of homogeneous spaces.

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