Super M - brane actions in adS 4 × S 7 and adS 7 × S 4 Piet

Super M - brane actions in adS 4 × S 7 and adS 7 × S 4

Non-Relativistic AdS Branes and Newton-Hooke Superalgebra

We examine a non-relativistic limit of D-branes in AdS5×S and M-branes in AdS4/7×S. First, Newton-Hooke superalgebras for the AdS branes are derived from AdS×S superalgebras as Inönü-Wigner contractions. It is shown that the directions along which the AdS-brane worldvolume extends are restricted by requiring that the isometry on the AdS-brane worldvolume and the Lorentz symmetry in the transver...

Open M - branes on AdS 4 / 7 × S 7 / 4 Revisited

We proceed further with a study of open supermembrane on the AdS 4/7 ×S 7/4 backgrounds. Open supermembrane can have M5-brane and 9-brane as Dirichlet branes. In AdS and pp-wave cases the configurations of Dirichlet branes are restricted. A classification of possible Dirichlet branes, which is given up to and including the fourth order of fermionic variable θ in hep-th/0310035, is shown to be v...

The M - Theory Two - Brane in AdS 4 × S 7 and AdS 7 × S 4

We construct the supermembrane action in an AdS4 ×S 7 and AdS7 ×S 4 background to all orders in anticommuting coordinates. The result is compared to and agrees completely with results obtained earlier for generic supergravity backgrounds through gauge completion at low orders in θ.

S 7 via Supermembrane Probe

The spacetime superalgebra via the supermembrane probe in the background of AdS4× S is discussed to the lowest order in the spinor coordinate θ. To obtain the correct spacetime superalgebras, all θ order corrections for supervielbein and super 3-form gauge potential have to be included. The central extension of the superalgebra OSp(8|4) of the super isometries for AdS4 × S 7 is found. e-mail ad...