A comment on discrete Kalb-Ramond field on orientifold and rank reduction

Details A comment on discrete Kalb-Ramond field on orientifold and rank reduction A comment on discrete Kalb-Ramond field on orientifold and rank reduction

2008-04-24

arxiv.org/abs/0804.3931v2

Phys.Lett.B668:324-330,2008

Physics

High Energy Physics

High Energy Physics - Theory

v2: added references, improved introduction and corrected misprints; 15 pages

Scientific paper

10.1016/j.physletb.2008.08.051

We show that the rank reduction of the gauge group on orientifolds in presence of non vanishing discrete Kalb-Ramond field can be explained by the presence of an induced field strength in a non trivial bundle on the branes. This field strength is also necessary for the tadpole cancellation and the number of branes is left unchanged by the presence of the discrete Kalb-Ramond background.

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