289 citations · 480 across the 11 of their papers we have counts for
11 papers
Constraints on dark matter-neutrino scattering from the Milky-Way satellites and subhalo modeling for dark acoustic oscillations
Kensuke Akita, Shin'ichiro Ando
The elastic scattering between dark matter (DM) and radiation can potentially explain small-scale observations that the cold dark matter faces as a challenge, as damping density fl…
Updated Constraints and Future Prospects on Majoron Dark Matter
Kensuke Akita, Michiru Niibo
Majorons are (pseudo-)Nambu-Goldstone bosons associated with lepton number symmetry breaking due to the Majorana mass term of neutrinos introduced in the seesaw mechanism. They are…
A review of neutrino decoupling from the early universe to the current universe
Kensuke Akita, Masahide Yamaguchi
We review the distortions of spectra of relic neutrinos due to the interactions with electrons, positrons, and neutrinos in the early universe. We solve integro-differential kineti…
Probing non-standard neutrino interactions with a light boson from next galactic and diffuse supernova neutrinos
Kensuke Akita, Sang Hui Im, Mehedi Masud
Non-standard neutrino interactions with a massive boson can produce the bosons in the core of core-collapse supernovae (SNe). After the emission of the bosons from the SN core, the…
Neutrino lines from MeV dark matter annihilation and decay in JUNO
Kensuke Akita, Gaetano Lambiase, Michiru Niibo +1
We discuss the discovery potential of JUNO experiment for neutrino lines from MeV dark matter (DM) annihilation and decay in a model independent way. We find that JUNO will be able…
Unstable Cosmic Neutrino Capture
Kensuke Akita, Gaetano Lambiase, Masahide Yamaguchi
Future direct observations of the Cosmic Neutrino Background (CB) have the potential to explore a neutrino lifetime, especially in the region of the age of the universe, $t_0=4.…
Precise Capture Rates of Cosmic Neutrinos and Their Implications on Cosmology
Kensuke Akita, Saul Hurwitz, Masahide Yamaguchi
We explore the potential of measurements of cosmological effects, such as neutrino spectral distortions from the neutrino decoupling and neutrino clustering in our Galaxy, via cosm…
A precision calculation of relic neutrino decoupling
Kensuke Akita, Masahide Yamaguchi
We study the distortions of equilibrium spectra of relic neutrinos due to the interactions with electrons, positrons, and neutrinos in the early Universe. We solve the integro-diff…
Affleck-Dine baryogenesis in the SUSY Dine-Fischler-Srednicki-Zhitnitsky axion model without R-parity
Kensuke Akita, Hajime Otsuka
We investigate the baryon asymmetry in the supersymmetry Dine-Fischler-Srednicki-Zhitnitsky axion model without R-parity. It turns out that the R-parity violating terms economicall…
Axion Inflation and Affleck-Dine Baryogenesis
Kensuke Akita, Tatsuo Kobayashi, Hajime Otsuka
String theory generically predicts the coupling between the Affleck-Dine field and axion field through higher-dimensional operators. We thus explore the Affleck-Dine baryogenesis o…
Moduli mediation without moduli-induced gravitino problem
Kensuke Akita, Tatsuo Kobayashi, Akane Oikawa +1
We study the moduli-induced gravitino problem within the framework of the phenomenologically attractive mirage mediations. The huge amount of gravitino generated by the moduli deca…