BPS nature of 3-string junctions
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. © 1998
- Publication:
-
Physics Letters B
- Pub Date:
- March 1998
- DOI:
- 10.1016/S0370-2693(98)00140-3
- arXiv:
- arXiv:hep-th/9711094
- Bibcode:
- 1998PhLB..423..261D
- Keywords:
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- High Energy Physics - Theory
- E-Print:
- 7 pages, harvmac (b), 3 figures