Abstract
The Effective Field Theory of LargeScale Structure is a formalism that allows us to predict the clustering of Cosmological LargeScale Structure in the mildly nonlinear regime in an accurate and reliable way. After validating our technique against several sets of numerical simulations, we perform the analysis for the cosmological parameters of the DR12 BOSS data. We assume ΛCDM, a fixed value of the baryon/darkmatter ratio, Ωb/Ωc, and of the tilt of the primordial power spectrum, ns, and no significant input from numerical simulations. By using the oneloop power spectrum multipoles, we measure the primordial amplitude of the power spectrum, As, the abundance of matter, Ωm, and the Hubble parameter, H0, {to about 13%, 3.2% and 3.2% respectively, obtaining ln (1010As)=2.72± 0.13, 0Ωm=0.309± 0.01, H0=68.5± 2.2 km/(s Mpc) at 68% confidence level. If we then add a CMB prior on the sound horizon, the error bar on H0 is reduced to 1.6%.} These results are a substantial qualitative and quantitative improvement with respect to former analyses, and suggest that the EFTofLSS is a powerful instrument to extract cosmological information from LargeScale Structure.
Original language  English 

Article number  005 
Journal  Journal of Cosmology and Astroparticle Physics 
Volume  2020 
Issue number  5 
DOIs  
Publication status  Published  5 May 2020 
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D'Amico, G. (Creator), Gleyzes, J. (Creator), Kokron, N. (Creator), Markovic, K. (Creator), Senatore, L. (Creator), Zhang, P. (Creator) & Beutler, F. (Creator), IOP Publishing, 5 May 2020
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