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Type II seesaw models with modular <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>A</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math> symmetry
We discuss type II seesaw models adopting modular ${A}_{4}$ symmetry in a supersymmetric framework. In our approach, the models are classified by the assignment of ${A}_{4}$ representations and modular weights for leptons and triplet Higgs fields. Then neutrino mass matrix is characterized by modulus $\ensuremath{\tau}$ and two free parameters. Carrying …