4.7 Article

The final model building for the supersymmetric Pati-Salam models from intersecting D6-branes

Journal

EUROPEAN PHYSICAL JOURNAL C
Volume 82, Issue 8, Pages -

Publisher

SPRINGER
DOI: 10.1140/epjc/s10052-022-10663-9

Keywords

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Funding

  1. National Key Research and Development Program of China [2020YFC2201504]
  2. National Natural Science Foundation of China [11875062, 11947302]
  3. KIAS [PG080701, MG080401]
  4. Natural Science Basic Research Plan in Shaanxi Province of China [2020JQ-804]
  5. Shaanxi Provincial Education Department [20JK0685]

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This study presents the construction of three-family N=1 supersymmetric Pati-Salam models using intersecting D6-branes and demonstrates that string scale gauge coupling unification can be achieved by introducing vector-like particles from the N=2 sector.
All the possible three-family N = 1 supersymmetric Pati-Salam models constructed with intersecting D6branes from Type IIA orientifolds on T-6/(Z(2) x Z(2)) are recently presented in arXiv:2112.09632. Taking models with largest wrapping number 5 and approximate gauge coupling unification at GUT scale as examples, we show string scale gauge coupling unification can be realized through two-loop renormalization group equation running by introducing seven pairs of vector-like particles from N = 2 sector. The number of these introduced vector-like particles are fully determined by the brane intersection numbers while there are two D6-brane parallel to each other along one two-torus. We expect this will solve the gauge coupling unification problem in the generic intersecting brane worlds by introducing vector-like particles that naturally included in the N = 2 sector.

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