SU(3)-holonomy metrics from nilpotent Lie groups

Details SU(3)-holonomy metrics from nilpotent Lie groups SU(3)-holonomy metrics from nilpotent Lie groups

2011-08-11

arxiv.org/abs/1108.2450v1

Mathematics

Differential Geometry

39 pages

Scientific paper

One way of producing explicit Riemannian 6-manifolds with holonomy SU(3) is by integrating a flow of SU(2)-structures on a 5-manifold, called the hypo evolution flow. In this paper we classify invariant hypo SU(2)-structures on nilpotent 5-dimensional Lie groups. We characterize the hypo evolution flow in terms of gauge transformations, and study the flow induced on the variety of frames on a Lie algebra taken up to automorphisms. We classify the orbits of this flow for all hypo nilpotent structures, obtaining several families of cohomogeneity one metrics with holonomy contained in SU(3). We prove that these metrics cannot be extended to a complete metric, unless they are flat.

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