Yukawa coupling structure in intersecting D-brane models
Department of Physics, Tokyo Metropolitan University, Hachioji, 192-0397, Tokyo, Japan
2 Department of Physics, Kyoto University, 606-8502, Kyoto, Japan
3 Theoretical Physics Laboratory, RIKEN, 2-1 Hirosawa, Wako, 351-0198, Saitama, Japan
4 Theory Group, KEK, 1-1 Oho, Tsukuba, 305-0801, Ibaraki, Japan
* e-mail: email@example.com
The structure of Yukawa coupling matrices is investigated in type IIA T 6/(Z2 x Z2) orientifold models with intersecting D-branes. Yukawa coupling matrices are difficult to be made realistic in conventional models in which the generation structure emerges by the multiple intersection of D-branes in the factorized T 6 = T 2 x T 2 x T 2. We study the new type of flavor structure, where Yukawa couplings are dynamically generated, and show this type of models lead to non-trivial structures of Yukawa coupling matrices, which can be realistic.
© Springer-Verlag, 2005