On the renormalization-group analysis of gauge groups containing U(1)

@article{Lavoura1993OnTR,
  title={On the renormalization-group analysis of gauge groups containing U(1)},
  author={Lavoura},
  journal={Physical review. D, Particles and fields},
  year={1993},
  volume={48 5},
  pages={
          2356-2359
        }
}
I point out the existence of misconceptions of a similar nature in the analyses of two different cases in which a grand unified theory---SO(10) in the first case, SU(8) in the second one---breaks to the standard model via an intermediate-energy gauge group containing a factor U(1)[direct product]U(1). In the second case, false conclusions have been drawn concerning the possible unification of the gauge couplings. The erroneous procedure has been to use two U(1) factors which, though orthogonal… CONTINUE READING
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