Elsevier

Physics Letters B

Volume 423, Issues 3–4, 26 March 1998, Pages 261-264
Physics Letters B

BPS nature of 3-string junctions

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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.

References (15)

  • J. Polchinski, D-branes and Ramond-Ramond charges, hep-th/9510017, Phys. Rev. Lett. 75 (1995)...
  • E. Witten, Bound states of strings and p-branes, hep-th/9510135, Nucl. Phys. B460 (1996)...
  • A. Strominger, Open p-branes, hep-th/9512059, Phys. Lett. B383 (1996)...
  • O. Aharony, J. Sonnenschein and S. Yankielowicz, Interactions of strings and D-branes from M theory, hep-th/9603009,...
  • J.H. Schwarz, Lectures on superstring and M theory dualities, hep-th/9607201, Nucl. Phys. Proc. Suppl. 55B (1997)...
  • M. Gaberdiel and B. Zwiebach, Exceptional groups from open strings,...
  • K. Dasgupta and S. Mukhi, F-theory at constant coupling, hep-th/9606044, Phys. Lett. B385 (1996)...
There are more references available in the full text version of this article.

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