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hep-th2004
Normal ordering and boundary conditions in open bosonic strings
Nelson R. F. Braga, Hector L. Carrion, Cresus F. L. Godinho
Boundary conditions play a non trivial role in string theory. For instance the rich structure of D-branes is generated by choosing appropriate combinations of Dirichlet and Neumann…
hep-th2004
The Noncommutative U(N) Kalb-Ramond Theory
R. Amorim, C. N. Ferreira, C. F. L. Godinho
We present the noncommutative extention of the U(N) Cremmer-Scherk-Kalb-Ramond theory, displaying its differential form and gauge structures. The Seiberg-Witten map of the model is…