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arXiv · 2211.13453

Skewness consistency relation in large-scale structure and test of gravity theory

Daisuke Yamauchi·Shoya Ishimaru·Takahiko Matsubara·Tomo Takahashi
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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.

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Daisuke Yamauchi, Shoya Ishimaru, Takahiko Matsubara, Tomo Takahashi. 2022-11-24. Skewness consistency relation in large-scale structure and test of gravity theory. https://doi.org/10.1103/physrevd.107.043526

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