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Peer-reviewedCC BY 4.0Journal of High Energy Physics

SU(9) grand unified model with rank-reducing discrete boundary conditions on T2/ℤ4

  • Yoshiharu Kawamura1
  • Kentaro Kojima2
  • Toshifumi Yamashita3
  1. 1Shinshu University
  2. 2Kyushu University
  3. 3Aichi Medical University
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Abstract

A bstract : We study a six-dimensional SU(9) grand unified model with rank-reducing discrete boundary conditions and continuous Wilson line phases on the orbifold T ² / ℤ ₄ . We show that the model can realize grand unification of the Standard Model gauge interactions and electroweak symmetry breaking via the Hosotani mechanism. The model has several attractive features. Two Higgs doublets arise as zero modes of the extra-dimensional components of the gauge field, and the leptons and quarks in each generation are separately embedded into two bulk multiplets, in the 36 and 84 representations of SU(9), respectively, without exotic matter. Furthermore, proton decay processes mediated by the gauge bosons in the bulk are absent, because the leptons and quarks belong to different bulk multiplets.

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Cite

BibTeXRIS
BibTeX
@article{kawamura2026grand,
  title = {{SU(9) grand unified model with rank-reducing discrete boundary conditions on T2/ℤ4}},
  author = {Yoshiharu Kawamura and Kentaro Kojima and Toshifumi Yamashita},
  journal = {Journal of High Energy Physics},
  year = {2026},
  month = oct,
  doi = {10.1007/jhep10(2026)174},
  url = {https://link.springer.com/article/10.1007/JHEP10(2026)174},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - SU(9) grand unified model with rank-reducing discrete boundary conditions on T2/ℤ4
AU  - Yoshiharu Kawamura
AU  - Kentaro Kojima
AU  - Toshifumi Yamashita
PY  - 2026
DA  - 2026/10/15
JO  - Journal of High Energy Physics
DO  - 10.1007/jhep10(2026)174
UR  - https://link.springer.com/article/10.1007/JHEP10(2026)174
AB  - A bstract : We study a six-dimensional SU(9) grand unified model with rank-reducing discrete boundary conditions and continuous Wilson line phases on the orbifold T ² / ℤ ₄ . We show that the model can realize grand unification of the Standard Model gauge interactions and electroweak symmetry breaking via the Hosotani mechanism. The model has several attractive features. Two Higgs doublets arise as zero modes of the extra-dimensional components of the gauge field, and the leptons and quarks in each generation are separately embedded into two bulk multiplets, in the 36 and 84 representations of SU(9), respectively, without exotic matter. Furthermore, proton decay processes mediated by the gauge bosons in the bulk are absent, because the leptons and quarks belong to different bulk multiplets.
SN  - 1029-8479
ER  -