Abstract
We construct new homogeneous Einstein spaces with negativeRicci curvature in two ways: First, we give a method for classifying andconstructing a class of rank one Einstein solvmanifolds whose derivedalgebras are two-step nilpotent. As an application, we describe anexplicit continuous family of ten-dimensional Einstein manifolds with atwo-dimensional parameter space, including a continuous subfamily ofmanifolds with negative sectional curvature. Secondly, we obtain newexamples of non-symmetric Einstein solvmanifolds by modifying thealgebraic structure of non-compact irreducible symmetric spaces of rankgreater than one, preserving the (constant) Ricci curvature.
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Gordon, C.S., Kerr, M.M. New Homogeneous Einstein Metrics of Negative Ricci Curvature. Annals of Global Analysis and Geometry 19, 75–101 (2001). https://doi.org/10.1023/A:1006767203771
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DOI: https://doi.org/10.1023/A:1006767203771