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

Chiaki Hikage, Kazuya Koyama, Ryuichi Takahashi

Research output: Contribution to journalArticlepeer-review

76 Downloads (Pure)

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.
Original languageEnglish
Article number043510
Number of pages15
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume101
Issue number4
DOIs
Publication statusPublished - 10 Feb 2020

Keywords

  • astro-ph.CO
  • RCUK
  • STFC
  • ST/N000668/1
  • ST/S000550/1

Fingerprint

Dive into the research topics of 'Perturbation theory for the redshift-space matter power spectra after reconstruction'. Together they form a unique fingerprint.

Cite this