Perturbation theory for the redshift-space matter power spectra after reconstruction

Abstract

We derive the one-loop perturbative formula of the redshift-space matter power spectrum after density field reconstruction in the Zeldovich approximation. We find that the reconstruction reduces the amplitudes of nonlinear one-loop perturbative terms significantly by partially erasing the nonlinear mode-coupling between density and velocity fields. In comparison with N-body simulations, we find that both the monopole and quadrupole spectra of reconstructed matter density fields agree with the one-loop perturbation theory up to higher wavenumber than those before reconstruction. We also evaluate the impact on cosmic growth rate assuming the survey volume and the number density like the Baryon Oscillation Spectroscopic Survey and find that the total error, including statistical and systematic ones due to one-loop approximation, decreases by half.

15 pages, 3 figures, accepted for publications in PRD

References in corpus (21)

• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• Transients from Initial Conditions in Cosmological Simulations
• The Effective Field Theory of Cosmological Large Scale Structures
• Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
• Resumming Cosmological Perturbations via the Lagrangian Picture: One-loop Results in Real Space and in Redshift Space
• Nonlinear Evolution of Baryon Acoustic Oscillations
• On the Robustness of the Acoustic Scale in the Low-Redshift Clustering of Matter
• The shape of the SDSS DR5 galaxy power spectrum
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in Fourier-space
• Large-Scale Anisotropic Correlation Function of SDSS Luminous Red Galaxies
• The detectability of baryonic acoustic oscillations in future galaxy surveys
• Non-linear structure formation and the acoustic scale
• Reconstructing Baryon Oscillations: A Lagrangian Theory Perspective
• Simulations of Baryon Oscillations
• Third-Order Density Perturbation and One-Loop Power Spectrum in Dark-Energy-Dominated Universe
• Perturbative approach to covariance matrix of the matter power spectrum
• Neutrino mass constraint with the Sloan Digital Sky Survey power spectrum of luminous red galaxies and perturbation theory
• Testing general relativity with the multipole spectra of the SDSS luminous red galaxies

Cited by in corpus (7)

• DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
• A new analysis of galaxy 2-point functions in the BOSS survey, including full-shape information and post-reconstruction BAO
• Baryon Acoustic Oscillation Theory and Modelling Systematics for the DESI 2024 results
• A multitracer analysis for the eBOSS galaxy sample based on the effective field theory of large-scale structure
• Extracting high-order cosmological information in galaxy surveys with power spectra
• Biased tracer reconstruction with halo mass information
• Modelling the covariance matrix for the power spectra before and after the BAO reconstruction