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arXiv · hep-th/9711094

BPS Nature of 3-String Junctions

Keshav Dasgupta·Sunil Mukhi
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Abstract

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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Keshav Dasgupta, Sunil Mukhi. 1997-11-13. BPS Nature of 3-String Junctions. https://doi.org/10.1016/s0370-2693(98)00140-3

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