5 papers
Constraints on the varying electron mass and early dark energy in light of ACT DR6 and DESI DR2 and the implications for inflation
Yo Toda, Osamu Seto
Primarily motivated by the Hubble tension, we analyze the varying electron mass model and axionlike early dark energy model (EDE) using baryon acoustic oscillation data from DESI D…
Redshift-space distortion constraints on the neutrino mass and models to alleviate the Hubble tension
Yo Toda, Osamu Seto
We discuss the neutrino mass and Hubble tension solutions and examine their effects on the redshift-space distortion (RSD) observations. An analysis with RSD data indicates smaller…
Constraints on the simultaneous variation of the fine structure constant and electron mass in light of DESI BAO data
Yo Toda, Osamu Seto
We study the cosmological constraints of the time variation of the electron mass and the fine-structure constant , using data of cosmic microwave background, supernovae l…
DESI constraints on the varying electron mass model and axion-like early dark energy
Osamu Seto, Yo Toda
Baryon acoustic oscillation (BAO) is one of the important standard rulers in cosmology. The results of the latest BAO measurements by Dark Energy Spectroscopic Instrument (DESI) su…
Constraints on sterile neutrinos and the cosmological tensions
Supriya Pan, Osamu Seto, Tomo Takahashi +1
We investigate cosmological bounds on sterile neutrino masses in the light of the Hubble and tensions. We argue that non-zero masses for sterile neutrinos are inferred at 2$Ï…