Biased Tracers in Redshift Space in the EFT of Large-Scale Structure
By A. Perko, L. Senatore, Elise Jennings, Risa Wechsler. 2016
123 citations recorded by the source corpus.
The Effective Field Theory of Large-Scale Structure (EFTofLSS) provides a novel formalism that is able to accurately predict the clustering of large-scale structure (LSS) in the mildly non-linear regime. Here we provide the first computation of the power spectrum of biased tracers in redshift space at one loop order, and we make the associated code publicly available. We compare the multipoles $\ell=0,2$ of the redshift-space halo power spectrum, together with the real-space matter and halo power spectra, with data from numerical simulations at $z=0.67$. For the samples we compare to, which have a number density of $\bar n=3.8 \cdot 10^{-2}(h \ {\rm Mpc}^{-1})^3$ and $\bar n=3.9 \cdot 10^{-4}(h \ {\rm Mpc}^{-1})^3$, we find that the calculation at one-loop order matches numerical measurements to within a few percent up to $k\simeq 0.43 \ h \ {\rm Mpc}^{-1}$, a significant improvement with respect to former techniques. By performing the so-called IR-resummation, we find that the Baryon Acoustic Oscillation peak is accurately reproduced. Based on the results presented here, long-wavelength statistics that are routinely observed in LSS surveys can be finally computed in the EFTofLSS. This formalism thus is ready to start to be compared directly to observational data.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
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Citations in the corpus
- Learning to predict the cosmological structure formation (2018, background): “This is not surprising as the deeply nonlinear evolution at these scales is more difficult to simulate accurately and appears to be intractable by current analytical theories(66).”
- Combining full-shape and BAO analyses of galaxy power spectra: a 1.6% CMB-independent constraint on H0 (2020, background): “Creating a consistent model has been a subject of much work, but recent advances have led to the development of the ‘Effective Field Theory of Large Scale Structure’ (hereafter EFT) [36, 37], with extensions incorporating galaxy bias [38–41], redshift-space distortions [42, 43] and higher-order corr”
- The Ups and Downs of Early Dark Energy solutions to the Hubble tension: A review of models, hints and constraints circa 2023 (2023, background): “[243] Ashley Perko, Leonardo Senatore, Elise Jennings, and Risa H.”
- Consistent modeling of velocity statistics and redshift-space distortions in one-loop perturbation theory (2020, background): “Our treatment of this stochastic contribution differs from much of the literature [25, 26]; this is of no consequence when fitting the redshift-space power spectrum, since its contribution there is degenerate with that of the stochastic component to v(k), but makes a signficant difference when study”