Dilaton tadpoles and D-brane interactions in compact spaces

Details Dilaton tadpoles and D-brane interactions in compact spaces Dilaton tadpoles and D-brane interactions in compact spaces

2002-07-19

arxiv.org/abs/hep-th/0207178v3

JHEP 0212 (2002) 052

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, 5 figures. Minor corrections

Scientific paper

10.1088/1126-6708/2002/12/052

We analyse some physical consequences when supersymmetry is broken by a set of D-branes and/or orientifold planes in Type II string theories. Generically, there are global dilaton tadpoles at the disk level when the transverse space is compact. By taking the toy model of a set of electric charges in a compact space, we discuss two different effects appearing when global tadpoles are not cancelled. On the compact directions a constant term appears that allows to solve the equations of motion. On the non-compact directions Poincar\'e invariance is broken. We analyse some examples where the Poincar\'e invariance is broken along the time direction (cosmological models).After that, we discuss how to obtain a finite interaction between D-branes and orientifold planes in the compact space at the supergravity level.

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