Propagators on One-Loop Worldsheets for Orientifolds and Intersecting Branes

Details Propagators on One-Loop Worldsheets for Orientifolds and Intersecting Branes Propagators on One-Loop Worldsheets for Orientifolds and Intersecting Branes

2004-10-16

arxiv.org/abs/hep-th/0410177v3

JHEP0501:043,2005

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, significantly extended section 3, minor changes to other sections, references added

Scientific paper

10.1088/1126-6708/2005/01/043

We obtain the one-loop propagators in superstring theory for the general case when the worldsheet fields satisfy non-trivial holonomy and/or boundary conditions. Non-trivial holonomy arises in orbifold and orientifold backgrounds whereas non-trivial boundary conditions arise in backgrounds containing D-branes of different dimensionality or D-branes intersecting each other at an angle. In our derivation, we use a generalized version of the method of images. Dihedral groups play a crucial role in constructing the one-loop propagators.

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