T. H. Tatsuishi

activity

20162020

collaborators

18 papers

hep-th2020

Revisiting modular symmetry in magnetized torus and orbifold compactifications

Shota Kikuchi, Tatsuo Kobayashi, Shintaro Takada +2

We study the modular symmetry in $T^{2}$ and orbifold comfactifications with magnetic fluxes. There are $∣ M ∣$ zero-modes on $T^{2}$ with the magnetic flux $M$ . Their wavefunctions as w…

hep-ph2019

$C P$ violation in modular invariant flavor models

Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +3

We study the spontaneous $C P$ violation through the stabilization of the modulus $τ$ in modular invariant flavor models. The $C P$ -invaraiant potentential has the minimum only at ${…

hep-ph2019

Modular $A_{4}$ invariance and leptogenesis

Takehiko Asaka, Yongtae Heo, Takuya H. Tatsuishi +1

We consider a model with three right-handed neutrinos in which Yukawa coupling constants and Majorana masses are obtained by requiring the modular $A_{4}$ symmetry. It has been shown…

hep-ph2019

$A_{4}$ lepton flavor model and modulus stabilization from $S_{4}$ modular symmetry

Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +2

We study the modulus stabilization in an $A_{4}$ model whose $A_{4}$ flavor symmetry is originated from the $S_{4}$ modular symmetry. We can stabilize the modulus so that the $A_{4}$ invar…

hep-ph2019

New $A_{4}$ lepton flavor model from $S_{4}$ modular symmetry

Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +2

We study a flavor model with $A_{4}$ symmetry which originates from $S_{4}$ modular group. In $S_{4}$ symmetry, $Z_{2}$ subgroup can be anomalous, and then $S_{4}$ can be violated to $A_{4}$ .…

hep-ph2019

Modular $S_{3}$ invariant flavor model in SU(5) GUT

Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +2

We present a flavor model with the $S_{3}$ modular invariance in the framework of SU(5) GUT. The $S_{3}$ modular forms of weights $2$ and $4$ give the quark and lepton mass matrices wi…

Revisiting modular symmetry in magnetized torus and orbifold compactifications

CP violation in modular invariant flavor models

Modular A4​ invariance and leptogenesis

A4​ lepton flavor model and modulus stabilization from S4​ modular symmetry

New A4​ lepton flavor model from S4​ modular symmetry

Modular S3​ invariant flavor model in SU(5) GUT

$C P$ violation in modular invariant flavor models

Modular $A_{4}$ invariance and leptogenesis

$A_{4}$ lepton flavor model and modulus stabilization from $S_{4}$ modular symmetry

New $A_{4}$ lepton flavor model from $S_{4}$ modular symmetry

Modular $S_{3}$ invariant flavor model in SU(5) GUT