29 Jun-3 Jul 2026 Paris (France)
Non-invertible selection rules in magnetized orbifold models
Haruki Uchida  1, @  , Tatsuo Kobayashi  1, @  , Hajime Otsuka  2, @  , Morimitsu Tanimoto  3  
1 : Department of Physics, Hokkaido University  (Hokkaido Univ.)
Sapporo 060-0810 -  Japan
2 : Kyushu University
3 : Department of Physics [Niigata]
8050, Ikarashi 2-no-cho, Nishi-ku, Niigata 950-2181 -  Japan

In string theory on orbifolds, some string states can be labeled by conjugacy classes of a group rather than its element due to the identification of string states under the orbifold twist. In the type IIB magnetized D-brane models on T2/Z_N with magnetic fluxes, the Z_N invariant momentum operators obey non-invertible fusion rules under which degenerate chiral zero-modes non-trivially transform under the non-invertible symmetries. By using non-invertible selection rules, we can obtain various textures for the Yukawa couplings.



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