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• W1968629332 abstract "We apply the integrated perturbation theory (Matsubara 2011, PRD 83, 083518) to evaluate the scale-dependent bias in the presence of primordial non-Gaussianity. The integrated perturbation theory is a general framework of nonlinear perturbation theory, in which a broad class of bias models can be incorporated into perturbative evaluations of biased power spectrum and higher-order polyspectra. Approximations such as the high-peak limit or the peak-background split are not necessary to derive the scale-dependent bias in this framework. Applying the halo approach, previously known formulas are re-derived as limiting cases of a general formula in this work, and it is implied that modifications should be made in general situations. Effects of redshift-space distortions are straightforwardly incorporated. It is found that the slope of the scale-dependent bias on large scales is determined only by the behavior of primordial bispectrum in the squeezed limit, and is not sensitive to bias models in general. It is the amplitude of scale-dependent bias that is sensitive to the bias models. The effects of redshift-space distortions turn out to be quite small for the monopole component of the power spectrum, while the quadrupole component is proportional to the monopole component on large scales, and thus also sensitive to the primordial non-Gaussianity." @default.
• W1968629332 created "2016-06-24" @default.
• W1968629332 creator A5028661756 @default.
• W1968629332 date "2012-09-19" @default.
• W1968629332 modified "2023-10-18" @default.
• W1968629332 title "Deriving an accurate formula of scale-dependent bias with primordial non-Gaussianity: An application of the integrated perturbation theory" @default.
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• W1968629332 doi "https://doi.org/10.1103/physrevd.86.063518" @default.
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