Higher Loop Effects on Unification via Kaluza-Klein Thresholds

Details Higher Loop Effects on Unification via Kaluza-Klein Thresholds Higher Loop Effects on Unification via Kaluza-Klein Thresholds

1999-05-18

arxiv.org/abs/hep-th/9905137v2

Nucl.Phys. B562 (1999) 78-102

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, revtex; minor misprints corrected, some comments modified (to appear in Nucl. Phys. B)

Scientific paper

10.1016/S0550-3213(99)00517-9

We discuss higher loop corrections to gauge coupling renormalization in the context of gauge coupling unification via Kaluza-Klein thresholds. We show that in the case N=1 supersymmetric compactifications the one-loop threshold contributions are dominant, while the higher loop correction are subleading. This is due to the fact that at heavy Kaluza-Klein levels the spectrum as well as the interactions are N=2 supersymmetric. In particular, we give two different arguments leading to this result - one is field theoretic, while the second one utilizes the power of string perturbation techniques. To illustrate our discussions we perform explicit two-loop computations of various corrections to gauge couplings within this framework. We also remark on phenomenological applications of our discussions in the context of TeV-scale brane world.

Affiliated with

Also associated with

No associations

Rating

Higher Loop Effects on Unification via Kaluza-Klein Thresholds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Higher Loop Effects on Unification via Kaluza-Klein Thresholds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Higher Loop Effects on Unification via Kaluza-Klein Thresholds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-18580