972 citations · 9.3k across the 258 of their papers we have counts for
260 papers
4D modular flavor symmetric models inspired by higher dimensional theory
Shota Kikuchi, Tatsuo Kobayashi, Hajime Otsuka +3
We study a scenario to derive four-dimensional modular flavor symmetric models from higher dimensional theory by assuming the compactification consistent with the modular symmetry.…
Magnetotransport studies of the Sb square-net compound LaAgSb under high pressure and rotating magnetic fields
Kazuto Akiba, Nobuaki Umeshita, Tatsuo C. Kobayashi
Square-net-layered materials have attracted attention as an extended research platform of Dirac fermions and of exotic magneto-transport phenomena. In this study, we investigated t…
Modular symmetry in the SMEFT
Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto +1
We study the modular symmetric standard-model effective field theory. We employ the stringy Ansatz on coupling structure that 4-point couplings of matter fields are writt…
Yukawa textures in modular symmetric vacuum of magnetized orbifold models
Shota Kikuchi, Tatsuo Kobayashi, Yuya Ogawa +1
We study quark mass matrices derived from magnetized orbifold models. Yukawa matrices at three modular fixed points, and are invariant…
Dark matter stability at fixed points in a modular symmetry
Tatsuo Kobayashi, Hiroshi Okada, Yuta Orikasa
We propose a new mechanism of stabilization for dark matter under fixed points of modular symmetry, thanks to recovering a residual symmetry for each of fixed points at $τ=ω,…
Anomaly of non-Abelian discrete symmetries
Tatsuo Kobayashi, Hikaru Uchida
We study anomalies of non-Abelian discrete symmetries; which part of non-Abelian group is anomaly free and which part can be anomalous. It is found that the anomaly-free elements o…