Negatively curved left-invariant metrics on Lie groups

Details Negatively curved left-invariant metrics on Lie groups Negatively curved left-invariant metrics on Lie groups

2010-02-10

arxiv.org/abs/1002.2106v2

Physics

Mathematical Physics

14 pages; Old notes from a talk held at the CMS/CAIMS Summer 2004 Meeting; v2: a note added, typos fixed

Scientific paper

We discuss negatively curved homogeneous spaces admitting a simply transitive group of isometries, or equivalently, negatively curved left-invariant metrics on Lie groups. Negatively curved spaces have a remarkably rich and diverse structure and are interesting from both a mathematical and a physical perspective. As well as giving general criteria for having left-invariant metrics with negative Ricci curvature scalar, we also consider special cases, like Einstein spaces and Ricci nilsolitons. We point out the relevance these spaces play in some higher-dimensional theories of gravity. In particular, we show that the Ricci nilsolitons are Riemannian solutions to certain higher-curvature gravity theories.

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