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- W2065840003 abstract "We study the halo bispectrum from non-Gaussian initial conditions. Based on a set of large $N$-body simulations starting from initial density fields with local type non-Gaussianity, we find that the halo bispectrum exhibits a strong dependence on the shape and scale of Fourier space triangles near squeezed configurations at large scales. The amplitude of the halo bispectrum roughly scales as $f_nl^2$. The resultant scaling on the triangular shape is consistent with that predicted by Jeong & Komatsu based on perturbation theory. We systematically investigate this dependence with varying redshifts and halo mass thresholds. It is shown that the $f_nl$ dependence of the halo bispectrum is stronger for more massive haloes at higher redshifts. This feature can be a useful discriminator of inflation scenarios in future deep and wide galaxy redshift surveys." @default.
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- W2065840003 date "2010-07-01" @default.
- W2065840003 modified "2023-09-24" @default.
- W2065840003 title "Scale dependence of halo bispectrum from non-Gaussian initial conditions in cosmological N-body simulations" @default.
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- W2065840003 doi "https://doi.org/10.1088/1475-7516/2010/07/002" @default.
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