Thresholds for Intersecting D-branes Revisited

Details Thresholds for Intersecting D-branes Revisited Thresholds for Intersecting D-branes Revisited

2007-05-15

arxiv.org/abs/0705.2150v1

Phys.Lett.B652:53-59,2007

Physics

High Energy Physics

High Energy Physics - Theory

14 pages

Scientific paper

10.1016/j.physletb.2007.06.060

Gauge threshold corrections for intersecting D6-brane string models on toroidal orbifold backgrounds are reconsidered. Both by dimensionally regularising the appearing open string one-loop diagrams in tree-channel as well as by zeta-function regularisation of the corresponding loop-channel one-loop diagrams, we arrive at a result which takes into account the infrared divergence from the contribution of the massless states in the running of the gauge coupling constant as well as the contribution of states, which become light in certain regions of the moduli space.

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