ar X iv : 0 80 6 . 22 70 v 2 [ he p - th ] 2 0 Ju n 20 08 An N = 1 Superfield Action for M 2 branes

ar X iv : 0 80 6 . 40 68 v 1 [ he p - th ] 2 5 Ju n 20 08 A Non - Supersymmetric Large - N 3 D CFT And Its Gravity Dual

We propose a three dimensional non-supersymmetric theory that is conformal in the large N limit. In a certain well defined bosonic sub-sector of gauge invariant operators, this theory is planar equivalent to the theory recently proposed by Aharony, Bergman, Jafferis and Maldacena as the theory on multiple M2 branes at an orbifold singularity. We discuss the realization of the theory on a brane ...

ar X iv : n uc l - th / 0 11 20 08 v 2 1 5 Ju l 2 00 2 Theoretical Study of the 3 He ( μ − , ν μ ) 3 H Capture

ar X iv : 0 70 7 . 22 98 v 1 [ he p - th ] 1 6 Ju l 2 00 7 1 N = 2 Instanton Calculus In Closed String Background

In this contribution we describe how to obtain instanton effects in four dimensional gauge theories by computing string scattering amplitudes in D3/D(–1) brane systems. In particular we study a system of fractional D3/D(–1) branes in a Z2 orbifold and in a Ramond-Ramond closed string background, and show that it describes the gauge instantons of N = 2 super Yang-Mills theory and their interacti...

ar X iv : 0 80 6 . 42 65 v 1 [ he p - th ] 2 6 Ju n 20 08 Relation Between Holonomy Groups in Superstrings , M and F - theories

We consider manifolds with special holonomy groups SU(3), G2 and Spin(7) as suitable for compactification of superstrings, M-theory and F-theory (with only one time) respectively. The relations of these groups with the octonions are discussed, reinforcing their role in the physics of string theory and duality. We also exhibit three triple exact sequences explaining the connections between the m...

ar X iv : 0 80 1 . 29 93 v 3 [ he p - th ] 1 1 Ju n 20 08 UFIFT - HEP - 08 - 02 E 7 ( 7 ) on the Light Cone

We use the Cremmer-Julia E7(7) non-linear symmetry of N = 8 Supergravity to derive its order κ on-shell Hamiltonian in terms of one chiral light-cone superfield. By requiring that E7(7) commute with the super-Poincaré group, we deduce to lowest non-trivial order in κ, the light cone E7(7) transformations of all fields of the theory, including the graviton. We then derive the dynamical supersymm...