Primordial density and BAO reconstruction
Cosmology and Nongalactic Astrophysics
2016-09-23 v1
Abstract
We present a new method to reconstruct the primordial (linear) density field using the estimated nonlinear displacement field. The divergence of the displacement field gives the reconstructed density field. We solve the nonlinear displacement field in the 1D cosmology and show the reconstruction results. The new reconstruction algorithm recovers a lot of linear modes and reduces the nonlinear damping scale significantly. The successful 1D reconstruction results imply the new algorithm should also be a promising technique in the 3D case.
Cite
@article{arxiv.1609.07041,
title = {Primordial density and BAO reconstruction},
author = {Hong-Ming Zhu and Ue-Li Pen and Xuelei Chen},
journal= {arXiv preprint arXiv:1609.07041},
year = {2016}
}
Comments
5 pages, 6 figures