Naoki Yamatsu

Gravitational waves from self-resonance during reheating with a quantum-corrected inflaton potential

Tomoya Inada, Noel Jonathan Jobu, Kenji Nishiwaki, Toshifumi Noumi et autres

We investigate how localized quantum corrections to the inflaton potential affect preheating dynamics and the resulting stochastic gravitational wave (GW) spectrum. When these corrections sufficiently suppress the quadratic term of the potential near its minimum, inflaton self-resonance can produce a peaked GW …

Gravitational waves from self-resonance during reheating with a quantum-corrected inflaton potential

Tomoya Inada, Noel Jonathan Jobu, Kenji Nishiwaki, Toshifumi Noumi et autres

We investigate how localized quantum corrections to the inflaton potential affect preheating dynamics and the resulting stochastic gravitational wave (GW) spectrum. When these corrections sufficiently suppress the quadratic term of the potential near its minimum, inflaton self-resonance can produce a peaked GW …

jp, in (code pays fourni par la source)

A simple solution to the monopole problem: SU(5) GUT with symmetry breaking into special subgroup

Yu Hamada, Naoki Yamatsu

Grand unified theories (GUTs) predict the overproduction of magnetic monopoles, leading to the so-called monopole problem, which is often addressed by cosmological inflation that dilutes their abundance. However, if inflation occurs before the GUT symmetry breaking, monopoles are produced afterwards and the …

A simple solution to the monopole problem: SU(5) GUT with symmetry breaking into special subgroup

Yu Hamada, Naoki Yamatsu

Grand unified theories (GUTs) predict the overproduction of magnetic monopoles, leading to the so-called monopole problem, which is often addressed by cosmological inflation that dilutes their abundance. However, if inflation occurs before the GUT symmetry breaking, monopoles are produced afterwards and the …

jp (code pays fourni par la source)

Family Unification in SO (16) Grand Unification

Cheng-Wei Chiang, Naoki Yamatsu

Abstract We propose a unified model for the three Standard Model gauge symmetries and $SU(3)$ family symmetry based on $SO(16)$ grand unified gauge symmetry on 6D spacetime. In this model, three chiral generations of quarks and leptons are unified into a 6D …

jp, tw, cn, es (code pays fourni par la source)

Origin of CKM matrix and natural FCNC suppression in gauge-Higgs unification

Yutaka Hosotani, Shuichiro Funatsu, Hisaki Hatanaka, Yuta Orikasa et autres

In the S O ( 5 ) × U ( 1 ) × S U ( 3 ) gauge-Higgs unification in the Randall-Sundrum warped space the mixing in the W couplings in the quark sector is induced by masses of S O …

jp, cz, es (code pays fourni par la source)

Origin of CKM matrix and natural FCNC suppression in gauge-Higgs unification

Yutaka Hosotani, Shuichiro Funatsu, Hisaki Hatanaka, Yuta Orikasa et autres

In the $SO(5) \times U(1) \times SU(3)$ gauge-Higgs unification in the Randall-Sundrum warped space the mixing in the $W$ couplings in the quark sector is induced by masses of $SO(5)$ singlet fermions which are responsible for splitting masses of down-type quarks from …

Probing gauge-Higgs unification models at the ILC with quark–antiquark forward–backward asymmetry at center-of-mass energies above the Z mass

A. Irles Quiles, J. Marquez, R Pöschl, F. Richard et autres

Abstract The International Linear Collider (ILC) will allow the precise study of $$e^{-}e^{+} \rightarrow q\bar{q}$$ e - e + → q q ¯ interactions at different center-of-mass energies from the $$Z$$ Z -pole to 1 TeV. In this paper, we discuss the …

es, fr, tw, jp (code pays fourni par la source)

Pseudo-Nambu-Goldstone dark matter in SU(7) grand unification

Cheng-Wei Chiang, Koji Tsumura, Yoshiki Uchida, Naoki Yamatsu

We propose a grand unified theory (GUT) pseudo-Nambu-Goldstone boson (pNGB) dark matter (DM) model based on SU(7) gauge symmetry. In the GUT model, the Standard Model (SM) gauge symmetry GSM≔SU(3)C×SU(2)L×U(1)Y and the “dark” gauge symmetry SU(2)D are unified, where the SU(2)D symmetry …

tw, jp, cn (code pays fourni par la source)

W boson mass in gauge-Higgs unification

Yutaka Hosotani, Shuichiro Funatsu, Hisaki Hatanaka, Yuta Orikasa et autres

The $W$ boson mass ${m}_{W}$ in the grand unified theory inspired $SO(5)\ifmmode\times\else\texttimes\fi{}U(1)\ifmmode\times\else\texttimes\fi{}SU(3)$ gauge-Higgs unification in the Randall-Sundrum (RS) warped space is evaluated. The muon decay ${\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{e}{\ensuremath{\nu}}_{\ensuremath{\mu}}$ proceeds by the exchange of not only the zero mode of the $W$ boson $({W}^{(0)})$ but …

jp, cz, tw (code pays fourni par la source)

W and Z boson pair production at electron-positron colliders in gauge-Higgs unification

Naoki Yamatsu, Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani et autres

We examine $W$ and $Z$ boson pair production processes at electron-positron collider experiments in the $SU(3{)}_{C}\ifmmode\times\else\texttimes\fi{}SO(5{)}_{W}\ifmmode\times\else\texttimes\fi{}U(1{)}_{X}$ gauge-Higgs unification (GHU) model. We find that the deviation of the total cross section for the ${e}^{\ensuremath{-}}{e}^{+}\ensuremath{\rightarrow}{W}^{\ensuremath{-}}{W}^{+}$ process from the Standard Model (SM) in the GHU …

tw, jp, cz (code pays fourni par la source)

Pseudo-Nambu-Goldstone Dark Matter in $SU(7)$ Grand Unification

Cheng-Wei Chiang, Koji Tsumura, Yoshiki Uchida, Naoki Yamatsu

We propose a grand unified theory (GUT) pseudo-Nambu-Goldstone boson (pNGB) dark matter (DM) model based on $SU(7)$ gauge symmetry. In the GUT model, the Standard Model (SM) gauge symmetry $G_{\rm SM} := SU(3)_C\times SU(2)_L\times U(1)_Y$ and the ``dark'' gauge symmetry $SU(2)_D$ are …