The Bryant-Salamon G_2 manifolds and hypersurface geometry

Details The Bryant-Salamon G_2 manifolds and hypersurface geometry The Bryant-Salamon G_2 manifolds and hypersurface geometry

2006-05-29

arxiv.org/abs/math-ph/0605074v2

Physics

Mathematical Physics

8 pages

Scientific paper

We show that two of the Bryant-Salamon G_2-manifolds have a simple topology ; homeomorphic to the complement of some submanifolds of the 7-dimensional sphere. In this connection, we show there exists a complete Ricci-flat (non-flat) metric on the complement of an m-dimensional sphere in an n-dimensional sphere for some n-1>m. We also give many examples of special Lagrangian submanifolds of the cotangent bundle of the sphere with the Stenzel metric. Hypersurface geometry is essential in the argument.

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