Arindam Mazumdar coauthored a particle-physics study asking whether internal consistency of a grand unified theory can constrain the number of fermion generations. The work examines representation content and unification conditions in candidate gauge models rather than treating the number of generations only as an externally selected parameter.[ref]
Number of fermion generations from a novel grand unified model by Pritibhajan Byakti and others. Abstract and introduction: model assumptions and generation counting
A consistency condition within one model is a conditional theoretical prediction. It does not establish that the chosen gauge structure has been experimentally realized.
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