Skewness consistency relation in large-scale structure and test of gravity theory
Cosmology and Nongalactic Astrophysics
2023-02-24 v3 General Relativity and Quantum Cosmology
Abstract
We investigate the skewness of galaxy number density fluctuations as a possible probe to test gravity theories. We find that the specific linear combination of the skewness parameters corresponds to the coefficients of the second-order kernels of the density contrast, which can be regarded as the consistency relation and used as a test of general relativity and modified gravity theories. We also extend the analysis of the skewness parameters from real space to redshift space and derive the redshift-space skewness consistency relation.
Keywords
Cite
@article{arxiv.2211.13453,
title = {Skewness consistency relation in large-scale structure and test of gravity theory},
author = {Daisuke Yamauchi and Shoya Ishimaru and Takahiko Matsubara and Tomo Takahashi},
journal= {arXiv preprint arXiv:2211.13453},
year = {2023}
}
Comments
18 pages, 2 figures, v3:Matches published version