2001/02/12 by R. D'Auria, S. Ferrara, M. A. Lledo
Physics and Astronomy · #hep-th
published as Lett.Math.Phys. 57 (2001) 123-133 · AMS LaTeX, 16 pages
arxiv created 2001/02/12 · arxiv updated 2009/11/30
We explore the embedding of Spin groups of arbitrary dimension and signature into simple superalgebras in the case of extended supersymmetry. The R-symmetry, which generically is not compact, can be chosen compact for all the cases that are congruent mod 8 to the physical conformal algebra so(D-2,2), D≥ 3. An \rmso(1,1) grading of the superalgebra is found in all cases. Central extensions of super translation algebras are studied in this framework.