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Combining perturbation theories with halo models
Patrick Valageas, Takahiro Nishimichi
We investigate the building of unified models that can predict the matter-density power spectrum and the two-point correlation function from very large to small scales, being consi…
The pairwise velocity probability density function in models with local primordial non-Gaussianity
Tsz Yan Lam, Takahiro Nishimichi, Naoki Yoshida
We study how primordial non-Gaussianity affects the pairwise velocity probability density function (PDF) using an analytical model and cosmological N-body simulations. We adopt the…
Baryon Acoustic Oscillations in 2D: Modeling Redshift-space Power Spectrum from Perturbation Theory
Atsushi Taruya, Takahiro Nishimichi, Shun Saito
We present an improved prescription for matter power spectrum in redshift space taking a proper account of both the non-linear gravitational clustering and redshift distortion, whi…