127 citations · 289 across the 5 of their papers we have counts for
5 papers
Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models
Takahiro Nishimichi, Akihito Shirata, Atsushi Taruya +10
We use a series of cosmological N-body simulations and various analytic models to study the evolution of the matter power spectrum in real space in a ΛCold Dark Matter universe. We…
Simulations of Baryon Acoustic Oscillations I: Growth of Large-Scale Density Fluctuations
Ryuichi Takahashi, Naoki Yoshida, Takahiko Matsubara +8
We critically examine how well the evolution of large-scale density perturbations is followed in cosmological -body simulations. We first run a large volume simulation and perfo…
Galaxy clustering constraints on deviations from Newtonian gravity at cosmological scales II: Perturbative and numerical analyses of power spectrum and bispectrum
Akihito Shirata, Yasushi Suto, Chiaki Hikage +2
We explore observational constraints on possible deviations from Newtonian gravity by means of large-scale clustering of galaxies. We measure the power spectrum and the bispectrum…
Characteristic Scales of Baryon Acoustic Oscillations from Perturbation Theory: Non-linearity and Redshift-Space Distortion Effects
Takahiro Nishimichi, Hiroshi Ohmuro, Masashi Nakamichi +7
An acoustic oscillation of the primeval photon-baryon fluid around the decoupling time imprints a characteristic scale in the galaxy distribution today, known as the baryon acousti…
Galaxy clustering constraints on deviations from Newtonian gravity at cosmological scales
Akihito Shirata, Tetsuya Shiromizu, Naoki Yoshida +1
In spite of the growing observational evidence for dark matter and dark energy in the universe, their physical nature is largely unknown. In fact, several authors have proposed mod…