Intersecting M-branes as Four-Dimensional Black Holes

Details Intersecting M-branes as Four-Dimensional Black Holes Intersecting M-branes as Four-Dimensional Black Holes

1996-04-26

arxiv.org/abs/hep-th/9604166v4

Nucl.Phys.B475:179-192,1996

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, harvmac; a reference added (the version to appear in Nulcear Physics B)

Scientific paper

10.1016/0550-3213(96)00338-0

We present two 1/8 supersymmetric intersecting p-brane solutions of 11-dimensional supergravity which upon compactification to four dimensions reduce to extremal dyonic black holes with finite area of horizon. The first solution is a configuration of three intersecting 5-branes with an extra momentum flow along the common string. The second describes a system of two 2-branes and two 5-branes. Related (by compactification and T-duality) solution of type IIB theory corresponds to a completely symmetric configuration of four intersecting 3-branes. We suggest methods for counting the BPS degeneracy of three intersecting 5-branes which, in the macroscopic limit, reproduce the Bekenstein-Hawking entropy.

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