The return of the four- and five-dimensional preons
arXiv:0705.2778 · doi:10.1088/0264-9381/24/17/010
Abstract
We prove the existence of 3/4-BPS preons in four- and five-dimensional gauged supergravities by explicitly constructing them as smooth quotients of the AdS_4 and AdS_5 maximally supersymmetric backgrounds, respectively. This result illustrates how the spacetime topology resurrects a fraction of supersymmetry previously ruled out by the local analysis of the Killing spinor equations.
10 pages (a minor imprecision has been corrected)