S-Duality as an Open String Gauge Symmetry
نویسنده
چکیده
We demonstrate and discuss the connection between S-duality and string-theoretic picture-changing gauge transformation in the “infinite momentum frame”. The picturechanging transformation at zero momentum leads to the presence of the topological 5-form charge in the type IIB superalgebra (dimensionally reduced SUSY algebra of M-theory) which is attributed to the M5-brane. The topological charge defines the D5-brane state, which also is the analogue of the monopole part of the Olive-Witten’s result in field theory.The correlation functions involving this monopole-like state are computed. The fivebrane states are associated with the ghost number cohomologies which we introduce in the paper.
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