One-loop Gauge Couplings in Orbifold Field Theories

Details One-loop Gauge Couplings in Orbifold Field Theories One-loop Gauge Couplings in Orbifold Field Theories

2003-11-30

arxiv.org/abs/hep-th/0312006v2

Physics

High Energy Physics

High Energy Physics - Theory

Some minor typos are corrected. 10 pages, Revtex4, Talk presented at Summer Institute 2003, Fuji-Yoshida, Japan (Aug. 12-19, 2

Scientific paper

We discuss the gauge coupling renormalization in orbifold field theories in which the 4-dimensional graviton and/or matter fields are quasi-localized in extra dimension to generate hierarchically different mass scales and/or Yukawa couplings. In such theories, there can be large calculable Kaluza-Klein threshold corrections to low energy gauge couplings, enhanced by the logarithms of small warp factor and/or of small Yukawa couplings. We present the results on those Kaluza-Klein threshold corrections in generic 5-dimensional theory on $S^1/Z_2\times Z_2$ containing arbitrary 5-dimensional gauge, spinor and scalar fields.

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