The standard model gauge symmetry from higher-rank unified groups in grand gauge-Higgs unification models

Kentaro Kojima, Kazunori Takenaga, Toshifumi Yamashita

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6 Citations (Scopus)

Abstract

We study grand unified models in the five-dimensional space-time where the extra dimension is compactified on S1/ℤ2. The spontaneous breaking of unified gauge symmetries is achieved via vacuum expectation values of the extra-dimensional components of gauge fields. We derive one-loop effective potentials for the zero modes of the gauge fields in SU(7), SU(8), SO(10), and E6 models. In each model, the rank of the residual gauge symmetry that respects the boundary condition imposed at the orbifold fixed points is higher than that of the standard model. We verify that the residual symmetry is broken to the standard model gauge symmetry at the global minima of the effective potential for certain sets of bulk fermion fields in each model.

Original languageEnglish
Article number18
JournalJournal of High Energy Physics
Volume2017
Issue number6
DOIs
Publication statusPublished - Jun 1 2017

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symmetry
broken symmetry
fermions
boundary conditions
vacuum

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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The standard model gauge symmetry from higher-rank unified groups in grand gauge-Higgs unification models. / Kojima, Kentaro; Takenaga, Kazunori; Yamashita, Toshifumi.

In: Journal of High Energy Physics, Vol. 2017, No. 6, 18, 01.06.2017.

Research output: Contribution to journalArticle

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