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https://www.ias.ac.in/article/fulltext/pram/062/02/0219-0228

Unification; extra dimension

Within the context of traditional logarithmic grand unification atM_GUT ≈ 10¹⁶ GeV, we show that it is nevertheless possible to observe certain GUT states such asX andY gauge bosons at lower scales, perhaps even in the TeV range. We refer to such states as ‘GUT precursors’. Such states offer an interesting alternative possibility for new physics at the TeV scale, even when the scale of gauge coupling unification remains high, and suggest that it may be possible to probe GUT physics directly even within the context of high-scale gauge coupling unification. More generally, our results also suggest that it is possible to construct self-consistent ‘hybrid’ models containing widely separated energy scales, and give rise to a Kaluza-Klein realization of non-trivial fixed points in higher-dimensional gauge theories.

Keith R Dienes¹ Emilian Dudas^{2 3} Tony Gherghetta⁴

1. Department of Physics, University of Arizona, Tucson, AZ - 85721, USA
2. LPT, Univ. Paris-Sud, Bât. 210, Orsay Cedex - F-91405, France
3. Ecole Polytechnique, Centre de Physique Théorique, Palaiseau Cedex - F-91128, France
4. School of Physics and Astronomy, University of Minnesota, Minneapolis, MN - 55455, USA

Published

February 2004