Non-perturbative vacua for M-theory on G2 manifolds -: art. no. 018

We study moduli stabilization in the context of M-theory on compact manifolds with G(2) holonomy, using super potentials from flux and membrane instantons, and recent results for the Kahler potential of such models. The existence of minima with negative cosmological constant, stabilizing all moduli, is established. While most of these minima preserve supersymmetry, we also find examples with broken supersymmetry. Supersymmetric vacua with vanishing cosmological constant can also be obtained after a suitable tuning of parameters.