Open Strings on the Neveu-Schwarz Pentabrane

Details Open Strings on the Neveu-Schwarz Pentabrane Open Strings on the Neveu-Schwarz Pentabrane

1997-11-10

arxiv.org/abs/hep-th/9711069v1

Nucl.Phys. B523 (1998) 193-210

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, LaTex

Scientific paper

10.1016/S0550-3213(98)00281-8

We analyze the propagation of open and unoriented strings on the Neveu-Schwarz pentabrane (N5-brane) along the lines of a similar analysis for the SU(2) WZNW models. We discuss the two classes of open descendants of the diagonal models and a series of Z_2 projected models which exist only for even values of the level k and correspond to branes at D-type orbifold singularities. The resulting configurations of branes and planes are T-dual to those relevant to the study of dualities in super Yang-Mills theories. The association of Chan-Paton factors to D-brane multiplicities is possible in the semi-classical limit k -> infinity, but due to strong curvature effects is unclear for finite k. We show that the introduction of a magnetic field implies a twist of the SU(2) current algebra in the open-string sector leading to spacetime supersymmetry breaking.

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