Full-shape BOSS constraints on dark matter interacting with dark radiation and lifting the S<sub>8</sub>
                tension

Rubira, Henrique; Asmaa, Mazoun,; Garny, Mathias

doi:10.1088/1475-7516/2023/01/034

Cited by 16 publications

(8 citation statements)

References 110 publications

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“…10 Therefore, the Hot NEDE model also does not contain an ultra-light trigger field. Instead, the Hot NEDE model contains interactions between dark matter and dark radiation, which can lead to a different simultaneous solution to the H0 and S8 tensions [23,24] (see also [73]).…”

Section: B Cold Nede Field Perturbationsmentioning

confidence: 99%

A grounded perspective on new early dark energy using ACT, SPT, and BICEP/Keck

Cruz

Niedermann

Sloth

2023

J. Cosmol. Astropart. Phys.

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We examine further the ability of the New Early Dark Energy model (NEDE) to resolve the current tension between the Cosmic Microwave Background (CMB) and local measurements of H 0 and the consequences for inflation. We perform new Bayesian analyses, including the current datasets from the ground-based CMB telescopes Atacama Cosmology Telescope (ACT), the South Pole Telescope (SPT), and the BICEP/Keck telescopes, employing an updated likelihood for the local measurements coming from the SH 0ES collaboration. Using the SH 0ES prior on H 0, the combined analysis with Baryonic Acoustic Oscillations (BAO), Pantheon, Planck and ACT improves the best-fit by Δχ 2 = -15.9 with respect to ΛCDM, favors a non-zero fractional contribution of NEDE, fNEDE > 0, by 4.8σ, and gives a best-fit value for the Hubble constant of H 0 = 72.09 km/s/Mpc (mean 71.49 ± 0.82 with 68% C.L.). A similar analysis using SPT instead of ACT yields consistent results with a Δχ 2 = -23.1 over ΛCDM, a preference for non-zero f NEDE of 4.7σ and a best-fit value of H0 = 71.77 km/s/Mpc (mean 71.43 ± 0.85 with 68% C.L.). We also provide the constraints on the inflation parameters r and ns coming from NEDE, including the BICEP/Keck 2018 data, and show that the allowed upper value on the tensor-scalar ratio is consistent with the ΛCDM bound, but, as also originally found, with a more blue scalar spectrum implying that the simplest curvaton model is now favored over the Starobinsky inflation model.

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Section: B Cold Nede Field Perturbationsmentioning

confidence: 99%

A grounded perspective on new early dark energy using ACT, SPT, and BICEP/Keck

Cruz

Niedermann

Sloth

2023

J. Cosmol. Astropart. Phys.

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“…This approach builds upon the effective field theory of LSS (EFTofLSS) [8][9][10][11][12][13] and the large-scale bias expansion of matter tracers [14,15]. It has achieved remarkable results when applied to BOSS data [16][17][18][19][20][21][22] and when probing new physics [23][24][25][26][27][28][29][30]. One of its downsides is that it requires a few free parameters (counter-terms, bias, and stochastic coefficients) to be fitted in data, although those parameters have a clear physical motivation and guarantee the correct parametrization of structure formation on the mildly non-linear regime.…”

mentioning

confidence: 99%

The effective field theory of large-scale structure and multi-tracer

Thiago

Rubira

Voivodic

et al. 2022

J. Cosmol. Astropart. Phys.

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We study the performance of the perturbative bias expansion when combined with the multi-tracer technique, and their impact on the extraction of cosmological parameters. We consider two populations of tracers of large-scale structure and perform a series of Markov chain Monte Carlo analysis for those two tracers separately. The constraints in ω cdm and h using multi-tracer are less biased and approximately 60% better than those obtained for a single tracer. The multi-tracer approach also provides stronger constraints on the bias expansion parameters, breaking degeneracies between them and with their error being typically half of the single-tracer case. Finally, we studied the impacts caused in parameter extraction when including a correlation between the stochastic field of distinct tracers. We also include a study with galaxies showing that multi-tracer still lead to substantial gains in the cosmological parameters.

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“…In particular, the bispectrum is a sensitive probe of early universe physics [28,29,32,34,60,61,152,153] and hypothetical violations of the equivalence principle [43] that are motivated, for example, by Lorentz-violating dark matter models [154,155], long-range forces in the dark sector [156] or non-trivial dark energy theories [44,45]. In addition, it would be interesting to understand if the bispectrum multipoles can sharpen full-shape constraints on other non-minimal dark matter models [157][158][159][160][161][162], additional long-range interactions in the dark sector [156] or some non-minimal dark energy theories [44,45]. We leave the exploration of these interesting possibilities to future work.…”

Section: Discussionmentioning

confidence: 99%

Cosmology with the Galaxy Bispectrum Multipoles: Optimal Estimation and Application to BOSS Data

Ivanov¹,

Philcox²,

Cabass³

et al. 2023

Preprint

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We present a framework for self-consistent cosmological analyses of the full-shape anisotropic bispectrum, including the quadrupole ( = 2) and hexadecapole ( = 4) moments. This features a novel window-free algorithm for extracting the latter quantities from data, derived using a maximum-likelihood prescription. Furthermore, we introduce a theoretical model for the bispectrum multipoles (which does not introduce new free parameters), and test both aspects of the pipeline on several high-fidelity mocks, including the PT Challenge suite of gigantic cumulative volume. This establishes that the systematic error is significantly below the statistical threshold, both for the measurement and modeling. As a realistic example, we extract the large-scale bispectrum multipoles from BOSS DR12 and analyze them in combination with the power spectrum data. Assuming a minimal ΛCDM model, with a BBN prior on the baryon density and a Planck prior on n s , we can extract the remaining cosmological parameters directly from the clustering data. The inclusion of the unwindowed higher-order ( > 0) large-scale bispectrum multipoles is found to moderately improve one-dimensional cosmological parameter posteriors (at the 5% − 10% level), though these multipoles are detected only in three out of four BOSS data segments at ≈ 5σ. Combining information from the power spectrum and bispectrum multipoles, the real space power spectrum, and the post-reconstructed BAO data, we find H 0 = 68.2 ± 0.8 km s −1 Mpc −1 , Ω m = 0.33 ± 0.01 and σ 8 = 0.736 ± 0.033 (the tightest yet found in perturbative full-shape analyses). Our estimate of the growth parameter S 8 = 0.77 ± 0.04 agrees with both weak lensing and CMB results. The estimators and data used in this work have been made publicly available.

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Full-shape BOSS constraints on dark matter interacting with dark radiation and lifting the S₈ tension

Cited by 16 publications

References 110 publications

A grounded perspective on new early dark energy using ACT, SPT, and BICEP/Keck

A grounded perspective on new early dark energy using ACT, SPT, and BICEP/Keck

The effective field theory of large-scale structure and multi-tracer

Cosmology with the Galaxy Bispectrum Multipoles: Optimal Estimation and Application to BOSS Data

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Full-shape BOSS constraints on dark matter interacting with dark radiation and lifting the S8 tension

Cited by 16 publications

References 110 publications

A grounded perspective on new early dark energy using ACT, SPT, and BICEP/Keck

A grounded perspective on new early dark energy using ACT, SPT, and BICEP/Keck

The effective field theory of large-scale structure and multi-tracer

Cosmology with the Galaxy Bispectrum Multipoles: Optimal Estimation and Application to BOSS Data

Contact Info

Product

Resources

About

Full-shape BOSS constraints on dark matter interacting with dark radiation and lifting the S₈ tension