Einstein warped G2 and Spin(7) manifolds

Abstract

In this paper most of the classes of G2-structures with Einstein induced metric of negative, null or positive scalar curvature are realized. This is carried out by means of warped G2-structures with fiber an Einstein SU(3) manifold. The torsion forms of any warped G2-structure are explicitly described in terms of the torsion forms of the SU(3)-structure and the warping function, which allows to give characterizations of the principal classes of Einstein warped G2 manifolds. Similar results are obtained for Einstein warped Spin(7) manifolds with fiber a G2 manifold.

31 pages, 6 tables

References in corpus (4)

• New string vacua from twistor spaces
• Curvature decomposition of G_2 manifolds
• Classification des varietes approximativement kahleriennes homogenes
• Conformal equivalence between certain geometries in dimension 6 and 7

Cited by in corpus (2)

• Closed G2-structures with conformally flat metric
• Laplacian coflow for warped ${\mathrm{G}}_2$-structures