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- W4384111910 abstract "After the successful full-shape analyses of BOSS data using the Effective Field Theory of Large-Scale Structure, we investigate what upcoming galaxy surveys might achieve. We introduce a ``perturbativity prior that ensures that loop terms are as large as theoretically expected, which is effective in the case of a large number of EFT parameters. After validating our technique by comparison with already-performed analyses of BOSS data, we provide Fisher forecasts using the one-loop prediction for power spectrum and bispectrum for two benchmark surveys: DESI and MegaMapper. We find overall great improvements on the cosmological parameters. In particular, we find that MegaMapper (DESI) should obtain at least a 12$sigma$ ($2sigma$) evidence for non-vanishing neutrino masses, bound the curvature $Omega_k$ to 0.0012 (0.012), and primordial inflationary non-Gaussianities as follows: $f_{text{NL}}^{text{loc.}}$ to $pm 0.26$ (3.3), $f_{text{NL}}^{text{eq.}}$ to $pm16$ (92), $f_{text{NL}}^{text{orth.}}$ to $pm 4.2$ (27). Such measurements would provide much insight on the theory of Inflation. We investigate the limiting factor of shot noise and ignorance of the EFT parameters." @default.
- W4384111910 created "2023-07-13" @default.
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- W4384111910 date "2023-07-10" @default.
- W4384111910 modified "2023-09-24" @default.
- W4384111910 title "Peeking into the next decade in Large-Scale Structure Cosmology with its Effective Field Theory" @default.
- W4384111910 doi "https://doi.org/10.48550/arxiv.2307.04992" @default.
- W4384111910 hasPublicationYear "2023" @default.
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