BPS Nature of 3-String Junctions

Details BPS Nature of 3-String Junctions BPS Nature of 3-String Junctions

1997-11-13

arxiv.org/abs/hep-th/9711094v1

Phys.Lett. B423 (1998) 261-264

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, harvmac (b), 3 figures

Scientific paper

10.1016/S0370-2693(98)00140-3

We study BPS-saturated classical solutions for the world-sheet theory of a D-string in the presence of a point charge. These solutions are interpreted as describing planar 3-string junctions, which arise because the original D-string is deformed by the presence of the inserted charge. We compute the angles of the junctions and show that the vector sum of string tensions is zero, confirming a conjecture of Schwarz that such configurations are BPS states.

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