Perturbation theory challenge for cosmological parameters estimation: Matter power spectrum in real space
نویسندگان
چکیده
منابع مشابه
Perturbation Theory Reloaded: Analytical Calculation of Nonlinearity in Baryonic Oscillations in the Real-space Matter Power Spectrum
We compare the nonlinear matter power spectrum in real space calculated analytically from third-order perturbation theory with N-body simulations at 1 < z < 6. We find that the perturbation theory prediction agrees with the simulations to better than 1% accuracy in the weakly nonlinear regime in which the dimensionless power spectrum, (k) 1⁄4 k P(k)/2 , which approximately gives the variance of...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2019
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.99.063530