5 papers
Renormalized Perturbation Theory at Field-level: the LSS bootstrap in GridSPT
Matteo Peron, Takahiro Nishimichi, Massimo Pietroni +1
We present a first step toward field-level cosmological inference beyond the standard CDM model, focusing on optimizing precision tests in the nonlinear regime of large-scale s…
Improving redshift-space power spectra of halo intrinsic alignments from perturbation theory
Atsushi Taruya, Toshiki Kurita, Teppei Okumura
Intrinsic alignments (IAs) of galaxies/halos observed via galaxy imaging survey, combined with redshift information, offer a novel probe of cosmology as a tracer of the tidal force…
Inner structure of cold and warm dark matter halos from particle dynamics
Yohsuke Enomoto, Atsushi Taruya, Satoshi Tanaka +1
Using the number of apocenter passages and the radial action of each particle, we characterize the phase-space structure within the multi-stream regions of cold and warm…
Information content in anisotropic cosmological fields: Impact of different multipole expansion scheme for galaxy density and ellipticity correlations
Takuya Inoue, Teppei Okumura, Shohei Saga +1
Multipole expansions have been often used for extracting cosmological information from anisotropic quantities in observation. However, which basis of the expansion is best suited t…
Perturbation Theory Remixed II: Improved Modeling of Nonlinear Bispectrum
Zhenyuan Wang, Donghui Jeong, Atsushi Taruya +2
We present the application of the -th order Eulerian Perturbation Theory (EPT) for modeling the matter bispectrum in real space as an advancement over the Standard Perturbati…