• Corpus ID: 845837

On the string coupling in a class of stringy orbifold GUTs

  title={On the string coupling in a class of stringy orbifold GUTs},
  author={Ben Dundee and Stuart Raby},
  journal={arXiv: High Energy Physics - Theory},
  • B. DundeeS. Raby
  • Published 7 August 2008
  • Physics
  • arXiv: High Energy Physics - Theory
In this short note, we examine the relationship between the string coupling constant, $\gstring{}$, and the grand unified gauge coupling constant, $\alphagut{}$, in a highly successful class of models based on anisotropic orbifold compactifications of the weakly coupled heterotic string. These models represent a stringy embedding of SU(6) gauge-Higgs unification in a five dimensional orbifold GUT. We find that the requirement that the theory be perturbative provides a non-trivial constraint on… 
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