On the absence of BPS preonic solutions in IIA and IIB supergravities

Details On the absence of BPS preonic solutions in IIA and IIB supergravities On the absence of BPS preonic solutions in IIA and IIB supergravities

2006-07-10

arxiv.org/abs/hep-th/0607060v2

JHEP0609:009,2006

Physics

High Energy Physics

High Energy Physics - Theory

plain latex, 12 pages Minor misprints corrected. Published in JHEP 09 (2006) 009

Scientific paper

10.1088/1126-6708/2006/09/009

We consider the present absence of 31 out of 32 supersymmetric solutions in supergravity i.e., of solutions describing BPS preons. A recent result indicates that (bosonic) BPS preonic solutions do not exist in type IIB supergravity. We reconsider this analysis by using the G-frame method, extend it to the IIA supergravity case, and show that there are no (bosonic) preonic solutions for type IIA either. For the classical D=11 supergravity no conclusion can be drawn yet, although the negative IIA results permit establishing the conditions that preonic solutions would have to satisfy. For supergravities with `stringy' corrections, the existence of BPS preonic solutions remains fully open.

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