Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-01-04
Nucl.Phys. B501 (1997) 445-468
Physics
High Energy Physics
High Energy Physics - Theory
29 pages, LaTex, no figures. Errors in degrees of freedom counting corrected, leading to altered brane scan
Scientific paper
10.1016/S0550-3213(97)00370-2
We investigate the most general N=1 graded extension of the Poincare algebra, and find the corresponding supersymmetry transformations and the associated superspaces. We find that the supersymmetry for which {Q,Q} = P is not special, and in fact must be treated democratically with a whole class of supersymmetries. We show that there are two distinct types of grading, and a new class of general spinors is defined. The associated superspaces are shown to be either of the usual type, or flat with no torsion. p-branes are discussed in these general superspaces and twelve dimensions emerges as maximal. New types of brane are discovered which could explain many features of the standard p-brane theories.
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