Little Groups and Statistics of Branes

Details Little Groups and Statistics of Branes Little Groups and Statistics of Branes

2002-09-04

arxiv.org/abs/hep-th/0209040v2

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 8 pages. Reference added, eqs. (6), (9) added, text improved

Scientific paper

The little groups (i.e. the subgroups of Lorentz group, leaving invariant given configurations of tensorial charges) of unitary irreps of superstring/M-theory superalgebras are considered. It is noted, that in the case of $(n-1)/n$ (maximal supersymmetric) BPS configuration in any dimensions the non-zero supercharge is neutral w.r.t. the algebra of little group, which means that all members of supermultiplet are in the same representation of that algebra and hence of (generalized with tensorial charges) Poincare algebra. This situation is similar to two-dimensional case and shows that usual spin-statistics connection statement is insufficient in the presence of branes, because different little groups can appear. We discuss the rules for definition of statistics for representations of generalized Poincare, and note that a geometric quantization method seems to be most relevant for that purpose.

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