ar X iv : h ep - t h / 06 08 16 3 v 1 2 3 A ug 2 00 6 G 2 holonomy metrics and wrapped D 6 - branes

ar X iv : h ep - t h / 06 08 16 3 v 3 6 O ct 2 00 6 G 2 holonomy metrics and wrapped D 6 - branes

We determine torsion class constraints for the supergravity background produced by D6-branes wrapping special Lagrangian cycles in a Calabi-Yau 3-fold. We employ a recently introduced method which involves probing the putative background by all possible supersymmetric brane configurations. We then lift this background to 11-dimensions to a product of 4-d Minkowski space and a 7-fold of G2-holon...

ar X iv : h ep - t h / 06 08 16 3 v 2 2 4 Se p 20 06 G 2 holonomy metrics and wrapped D 6 - branes

We determine torsion class constraints for the supergravity background produced by D6-branes wrapping special Lagrangian cycles in a Calabi-Yau 3-fold. We employ a recently introduced method which involves probing the putative background by all possible supersymmetric brane configurations. We then lift this background to 11-dimensions to a product of 4-d Minkowski space and a 7-fold of G2-holon...

ar X iv : h ep - t h / 02 08 05 1 v 2 1 9 A ug 2 00 2 Brane Solitons for G 2 Structures in Eleven - Dimensional Supergravity Re - Visited

We investigate the four-dimensional supergravity theory obtained from the compactification of eleven-dimensional supergravity on a smooth manifold of G2 holonomy. We give a new derivation for the Kähler potential associated with the scalar kinetic term of the N = 1 four-dimensional theory. We then examine some solutions of the four-dimensional theory which arise from wrapped M-branes.

ar X iv : h ep - t h / 02 08 05 1 v 1 7 A ug 2 00 2 Brane Solitons for G 2 Structures in Eleven - Dimensional Supergravity Re - Visited

We investigate the four-dimensional supergravity theory obtained from the compactification of eleven-dimensional supergravity on a smooth manifold of G2 holonomy. We give a new derivation for the Kähler potential associated with the scalar kinetic term of the N = 1 four-dimensional theory. We then examine some solutions of the four-dimensional theory which arise from wrapped M-branes.

ar X iv : h ep - e x / 00 08 06 5 v 1 2 6 A ug 2 00 0 Search for Large Extra Dimensions in Dielectron and Diphoton Production