paper

Overlapping Branes in M-Theory

arXiv:hep-th/9604179 · doi:10.1016/0550-3213(96)00423-3

Abstract

We construct new supersymmetric solutions of =11 supergravity describing orthogonally ``overlapping" membranes and fivebranes for =2,\dots,8. Overlapping branes arise after separating intersecting branes in a direction transverse to all of the branes. The solutions, which generalize known intersecting brane solutions, preserve at least of the supersymmetry. Each pairwise overlap involves a membrane overlapping a membrane in a 0-brane, a fivebrane overlapping a fivebrane in a 3-brane or a membrane overlapping a fivebrane in a string. After reducing overlapping membranes to obtain overlapping -2-branes in =10, -duality generates new overlapping -brane solutions in type IIA and type IIB string theory. Uplifting certain type IIA solutions leads to the =11 solutions. Some of the new solutions reduce to dilaton black holes in =4. Additionally, we present a =10 solution that describes two -5-branes overlapping in a string. -duality then generates further =10 solutions and uplifting one of the type IIA solutions gives a new =11 solution describing two fivebranes overlapping in a string.

21 pages (Harvmac b). A new discussion on solutions with four or more overlaps is presented. References added

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