The 2+2-Signature and the 1+1-Matrix-Brane
arXiv:hep-th/0606219 · doi:10.1142/S0217732307022657
Abstract
We discuss different aspects of the 2+2-signature from the point of view of the quatl theory. In particular, we compare two alternative approaches to such a spacetime signature, namely the 1+1-matrix-brane and the 2+2-target spacetime of a string. This analysis also reveals hidden discrete symmetries of the 2+2-brane action associated with the 2+2-dimensional sector of a 2+10-dimensional target background.
12 pages, Latex, to appear in Mod. Phys. Lett. A