N=1 Chern-Simons theories, orientifolds and Spin(7) cones
arXiv:0911.2595 · doi:10.1007/JHEP05(2010)045
Abstract
We construct three dimensional N=1 Chern-Simons theories living on M2 branes probing Spin(7) cones. We consider Spin(7) manifolds obtained as quotients of Calabi-Yau four-folds by an anti-holomorphic involution, following a construction by Joyce. The corresponding Chern-Simons theories can be obtained from N=2 theories by an orientifolding procedure. These theories are holographically dual to M theory solutions AdS_4 \times H, where the weak G_2 manifold H is the base of the Spin(7) cone.
26 pages, 3 figures, reference added.