Unifying the Strengths of Forces in Higher Dimensions
Abstract
We consider the embedding of the Standard Model fields in a (4+d)-dimensional theory while gravitons may propagate in d' extra, compact dimensions. We study the modification of strengths of the gravitational and gauge interactions and, for various values of d and d', we determine the energy scale at which these strengths are unified. Special cases where the unification of strengths is characterized by the absence of any hierarchy problem are also presented.
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