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Normal ordering and boundary conditions for fermionic string coordinates

Nelson R. F. Braga·Hector L. Carrion·Cresus F. L. Godinho
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Abstract

We build up normal ordered products for fermionic open string coordinates consistent with boundary conditions. The results are obtained considering the presence of antisymmetric tensor fields. We find a discontinuity of the normal ordered products at string endpoints even in the absence of the background. We discuss how the energy momentum tensor also changes at the world-sheet boundary in such a way that the central charge keeps the standard value at string end points.

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Nelson R. F. Braga, Hector L. Carrion, Cresus F. L. Godinho. 2006-04-12. Normal ordering and boundary conditions for fermionic string coordinates. https://doi.org/10.1016/j.physletb.2006.05.027

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