On Ricci negative solvmanifolds and their nilradicals

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim In the homogeneous case, the only curvature behavior which is still far from being understood is Ricci negative. In this paper, we study which nilpotent Lie algebras admit a Ricci negative solvable extension. Different unexpected behaviors were found. On the other hand, given a nilpotent Lie algebra, we consider the space of all the derivations such that the corresponding solvable extension has a metric with negative Ricci curvature. Using the nice convexity properties of the moment map for the variety of nilpotent Lie algebras, we obtain a useful characterization of such derivations and some applications.

Publication year:2019

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Authors:International

Authors from:Higher Education

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