19 papers
Massive modes on magnetized blow-up manifold of
Tatsuo Kobayashi, Hajime Otsuka, Hikaru Uchida
We study massive modes on a magnetized blow-up manifold of . The blow-up manifold can be constructed by appropriately replacing orbifold singular points with a pa…
Residual group-like symmetries in selection rules without group actions
Jun Dong, Tatsuo Kobayashi, Shuhei Miyamoto +2
We analyze loop-induced group-like symmetries in theories where fields are labeled by basis elements of a fusion algebra constructed from the conjugacy classes of finite groups. Al…
Yukawa Textures with Enhanced Symmetries in Heterotic Calabi-Yau Compactifications
Jun Dong, Tatsuo Kobayashi, Shuhei Miyamoto +1
We clarify the structure of Yukawa couplings and mass matrices for matter fields in heterotic string theory on smooth Calabi-Yau threefolds with standard embedding. The topological…
Zee-Babu model in a non-holomorphic modular symmetry and modular stabilization
Tatsuo Kobayashi, Hiroshi Okada, Yuta Orikasa
We study a Zee-Babu neutrino model in a non-holomorphic modular symmetry, and we construct a model so that there are minimum free parameters (two complex parameters). We find…
Modular weights of wave functions on magnetized torus
Tim Jeric, Tatsuo Kobayashi, Hajime Otsuka +2
We study the origin of modular weights of wave functions in magnetized models. It is explicitly demonstrated that the modular weights of the wave functions on magnetized $T…
Generalized CP from non-invertible selection rules
Tatsuo Kobayashi, Hajime Otsuka
We study a framework in which fields are labeled by basis elements of a fusion algebra with non-invertible fusion rules. In particular, we consider the case where fields are labele…