167 citations · 1.5k across the 73 of their papers we have counts for
9 papers · 1 filter
Non-gravitational signals of dark energy under a gauge symmetry
Kunio Kaneta, Hye-Sung Lee, Jiheon Lee +1
We investigate non-gravitational signals of dark energy within the framework of gauge symmetry in the dark energy sector. Traditionally, dark energy has been primarily studied thro…
The Role of Vectors in Reheating
Marcos A. G. Garcia, Kunio Kaneta, Wenqi Ke +3
We explore various aspects concerning the role of vector bosons during the reheating process. Generally, reheating occurs during the period of oscillations of the inflaton condensa…
Gravitational Waves from Particle Decays during Reheating
Shinya Kanemura, Kunio Kaneta
Gravitational waves have become an irreplaceable tool for exploring the post-inflationary universe. Their cosmological and astrophysical origins have been attracting numerous atten…
Gravitational Production of Spin-3/2 Particles During Reheating
Kunio Kaneta, Wenqi Ke, Yann Mambrini +2
We compute the density of a spin- particle, the raritron, produced at the end of inflation due to gravitational interactions. We consider a background inflaton condensate…
Gravitational and dark wave emission at binary merger
Kunio Kaneta, Kin-ya Oda, Motohiko Yoshimura
The recently proposed formalism of extended Jordan-Brans-Dicke gravity makes it possible to calculate energy loss rate due to both gravitational wave and scalar field (giving the o…
Misalignment mechanism for a mass-varying vector boson
Kunio Kaneta, Hye-Sung Lee, Jiheon Lee +1
A coherent field over the entire universe is an attractive picture in studying the dark sector of the universe. The misalignment mechanism, which relies on inflation to achieve hom…
Non-thermal Higgs Spectrum in Reheating Epoch: Primordial Condensate vs. Stochastic Fluctuation
Kunio Kaneta, Kin-ya Oda
Since electroweak symmetry is generally broken during inflation, the Standard Model Higgs field can become supermassive even after the end of inflation. In this paper, we study the…
Constraints on extended Jordan-Brans-Dicke gravity
Kunio Kaneta, Kin-ya Oda, Motohiko Yoshimura
Cosmological analysis of extended Jordan-Brans-Dicke (eJBD) gravity is presented in the Einstein metric frame in which gravitational interaction is readily understandable. Our form…
Quantifying Limits on CP Violating Phases from EDMs in Supersymmetry
Kunio Kaneta, Natsumi Nagata, Keith A. Olive +2
We revisit the calculation of the electron, neutron, and proton electric dipole moments (EDMs) in the constrained minimal supersymmetric standard model (CMSSM). The relatively larg…