Gauge Symmetry Reduction from the Extra Space S1/Z2

  title={Gauge Symmetry Reduction from the Extra Space S1/Z2},
  author={Yoshiharu Kawamura},
  journal={Progress of Theoretical Physics},
  • Y. Kawamura
  • Published 1999
  • Physics
  • Progress of Theoretical Physics
We study a mechanism of symmetry transition upon compactification of a 5-dimensional field theory on $S^1/Z_2$. The transition occurs unless all components in a multiplet of a symmetry group have a common $Z_2$ parity on $S^1/Z_2$. This mechanism is applied to a reduction of SU(5) gauge symmetry in grand unified theory, and phenomenological implications are discussed. 

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