collaborators

6 papers

hep-th2025

Generation structures and Yukawa couplings in magnetized models

Tim Jeric, Tatsuo Kobayashi, Kaito Nasu +1

We study fermion zero-mode wave functions with various chiralities in magnetized , torus. First, we consider the wave functions satisfying the Dirac equation and…

hep-ph2025

Moduli stabilization in finite modular symmetric models

Yoshihiko Abe, Komei Goto, Testutaro Higaki +2

We study vacua of moduli potential consisting of multiple contribution of modular forms in a finite modular symmetry. If the potential is given by a single modular form, the Minkow…

hep-ph2024

Large and small hierarchies from finite modular symmetries

Tetsutaro Higaki, Junichiro Kawamura, Tatsuo Kobayashi +2

We study the moduli stabilization by the radiative corrections due to the moduli dependent vector-like masses invariant under the finite modular symmetry. The radiative stabilizati…

hep-th2024

Moduli stabilization and light axion by Siegel modular forms

Shuta Funakoshi, Junichiro Kawamura, Tatsuo Kobayashi +2

We discuss the stabilization of multiple moduli by utilizing Siegel modular forms in the framework of modular invariant theories. We derive the stationary condi…

hep-ph2024

Spontaneous CP violation and partially broken modular flavor symmetries

Tetsutaro Higaki, Tatsuo Kobayashi, Kaito Nasu +1

We study the realization of spontaneous CP violation through moduli stabilization. In modular flavor models, the source of CP violation is the vacuum expectation values of the comp…

hep-th2024

Flavor symmetries from modular subgroups in magnetized compactifications

Tatsuo Kobayashi, Kaito Nasu, Ryusei Nishida +2

We study the flavor structures of zero-modes, which are originated from the modular symmetry on and its orbifold with magnetic fluxes. We introduce the constrai…