Dark Energy Survey Year 1 Results: A Precise H0 Estimate from DES Y1, BAO, and D/H Data

Abbott, T. M. C.; Abdalla, F. B.; Annis, J.; Bechtol, K.; Blazek, Jonathan; Benson, B. A.; Bernstein, R. A.; Bernstein, G. M.; Bertin, E.; Brooks, D.; Burke, D. L.; Rosell, A. Carnero; Kind, M. Carrasco; Carretero, J.; Castander, F. J.; Chang, C. L.; Crawford, T. M.; Cunha, C. E.; D’Andrea, C. B.; Costa, L. N. da; Davis, C.; DeRose, Joseph J.; Desai, S.; Diehl, H. T.; Dietrich, J. P.; Doel, P.; Drlica-Wagner, A.; Evrard, August E.; Fernández, E.; Flaugher, B.; Fosalba, P.; Frieman, Joshua A.; García-Bellido, J.; Gaztañaga, E.; Gerdes, D. W.; Giannantonio, T.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutiérrez, G.; Hartley, W. G.; Henning, J. W.; Honscheid, K.; Hoyle, B.; Huterer, Dragan; Jain, Bhuvnesh; James, D. J.; Jarvis, Mike; Jeltema, T.; Johnson, Michael D.; Johnson, M. W. G.; Krause, E.; Kuêhn, K.; Kuhlmann, S.; Kuropatkin, N.; Lahav, O.; Liddle, Andrew R.; Lima, M.; Lin, Huan; MacCrann, N.; Maia, M. A. G.; Manzotti, Alessandro; March, M.; Marshall, J. L.; Miquel, R.; Mohr, J. J.; Natoli, T.; Nugent, P.; Ogando, R. L. C.; Park, Y; Plazas, A. A.; Reichardt, Christian; Reil, K.; Roodman, A.; Ross, Ashley J.; Rozo, Eduardo; Rykoff, E. S.; Sánchez, E.; Scarpine, V.; Schubnell, M.; Scolnic, D.; Sevilla-Noarbe, I.; Sheldon, E.; Smith, M.; Smith, R. C.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Tarlè, G.; Thomas, Daniel; Troxel, M. A.; Walker, A. R.; Wechsler, Risa H.; Weller, J.; Wester, W.; Wu, W. L. K.; Zuntz, J.

doi:10.1093/mnras/sty1939

Cited by 263 publications

(196 citation statements)

References 58 publications

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“…RSD, GC and WL independent measurements all consistently detected a lower growth rate of matter density perturbations than predicted by the ΛCDM model. This is at variance with results extrapolated from CMB studies [14,13,15,16,180,181,17]. Scalar-tensor theories are not expected to produce lower growth relative to ΛCDM because of the fifth force they exhibit.…”

Section: Linear Growth Rate Of Matter Density Fluctuationsmentioning

confidence: 56%

“…Simulations of CMB anisotropy and CMB lensing spectra, assuming Planck 2015's best-fit values and Planck blue book on beam and noise specifications, show that models with an effective Newton constant stronger than G N can have a modulating effect similar to that of A L [204]. Nevertheless, this induces higher values of σ 8,0 making the tension with WL surveys more severe [13,15,14,16,180,181]. The A L tension remains an open issue as confirmed by the latest Planck 2018 results [1].…”

Section: Running Planck Massmentioning

confidence: 99%

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Effective field theory of dark energy: A review

2020

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The discovery of cosmic acceleration has triggered a consistent body of theoretical work aimed at modeling its phenomenology and understanding its fundamental physical nature. In recent years, a powerful formalism that accomplishes both these goals has been developed, the so-called effective field theory of dark energy. It can capture the behavior of a wide class of modified gravity theories and classify them according to the imprints they leave on the smooth background expansion history of the Universe and on the evolution of linear perturbations. The effective field theory of dark energy is based on a Lagrangian description of cosmological perturbations which depends on a number of functions of time, some of which are non-minimal couplings representing genuine deviations from standard gravity. Such a formalism is thus particularly convenient to fit and interpret the wealth of new data that will be provided by future galaxy surveys. Despite its recent appearance, this formalism has already allowed a systematic investigation of what lies beyond the standard gravity landscape and provided a conspicuous amount of theoretical predictions and observational results. In this review, we report on these achievements. Conclusion and outlook 94Appendix A Acronyms and symbols 971. Scalar-tensor theoriesà la Brans-Dicke, hereafter dubbed Generalized

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Section: Linear Growth Rate Of Matter Density Fluctuationsmentioning

confidence: 56%

Section: Running Planck Massmentioning

confidence: 99%

Effective field theory of dark energy: A review

2020

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“…See also Abbott et al [127] for an additional independent estimate of H 0 with a combination of clustering and weak lensing measurements from DES-Y1 with BAO and BBN data. A discussion about the combination of different measurements of H 0 from cosmological probes and local measurements is also reported in Abbott et al [127], Vega-Ferrero et al [128].…”

Section: Local Measurements Of the Hubble Constant And Supernovae Iamentioning

confidence: 99%

Status of Neutrino Properties and Future Prospects—Cosmological and Astrophysical Constraints

2018

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Cosmological observations are a powerful probe of neutrino properties, and in particular of their mass. In this review, we first discuss the role of neutrinos in shaping the cosmological evolution at both the background and perturbation level, and describe their effects on cosmological observables such as the cosmic microwave background and the distribution of matter at large scale. We then present the state of the art concerning the constraints on neutrino masses from those observables, and also review the prospects for future experiments. We also briefly discuss the prospects for determining the neutrino hierarchy from cosmology, the complementarity with laboratory experiments, and the constraints on neutrino properties beyond their mass.

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“…This is a statistically significant disagreement between the value of the current expansion rate (i.e., the Hubble constant) measured by the classical distance ladder (CDL) and that inferred from measurements of the CMB or the primordial element abundances established during big bang nucleosynthesis (BBN). In particular, the SH0ES team, using Cepheid-calibrated SNe Ia, has determined H 0 = 74.03 ± 1.42 km/s/Mpc [2], while the ΛCDM cosmology deduced from Planck CMB data and BAO+Dark Energy Survey+BBN data predict H 0 = 67.4 ± 0.6 km/s/Mpc [3] and H 0 = 67.4 +1.1 −1.2 km/s/Mpc [4], respectively. arXiv:1908.06995v1 [astro-ph.CO] 19 Aug 2019…”

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confidence: 99%

Oscillating scalar fields and the Hubble tension: A resolution with novel signatures

2020

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We present a detailed investigation of a sub-dominant oscillating scalar field ('early dark energy', EDE) in the context of resolving the Hubble tension. Consistent with earlier work, but without relying on fluid approximations, we find that a scalar field frozen due to Hubble friction until log 10 (zc) ∼ 3.5, reaching ρEDE(zc)/ρtot ∼ 10%, and diluting faster than matter afterwards can bring cosmic microwave background (CMB), baryonic acoustic oscillations, supernovae luminosity distances, and the late-time estimate of the Hubble constant from the SH0ES collaboration into agreement. A scalar field potential which scales as V (φ) ∝ φ 2n with 2 n 3.4 around the minimum is preferred at the 68% confidence level, and the Planck polarization places additional constraints on the dynamics of perturbations in the scalar field. In particular, the data prefers a potential which flattens at large field displacements. An MCMC analysis of mock data shows that the next-generation CMB observations (i.e., CMB-S4) can unambiguously detect the presence of the EDE at very high significance. This projected sensitivity to the EDE dynamics is mainly driven by improved measurements of the E-mode polarization.We also explore new observational signatures of EDE scalar field dynamics: (i) We find that depending on the strength of the tensor-to-scalar ratio, the presence of the EDE might imply the existence of isocurvature perturbations in the CMB. (ii) We show that a strikingly rapid, scaledependent growth of EDE field perturbations can result from parametric resonance driven by the anharmonic oscillating field for n ≈ 2. This instability and ensuing potentially nonlinear, spatially inhomogenoues, dynamics may provide unique signatures of this scenario. CONTENTS

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Dark Energy Survey Year 1 Results: A Precise H0 Estimate from DES Y1, BAO, and D/H Data

Cited by 263 publications

References 58 publications

Effective field theory of dark energy: A review

Effective field theory of dark energy: A review

Status of Neutrino Properties and Future Prospects—Cosmological and Astrophysical Constraints

Oscillating scalar fields and the Hubble tension: A resolution with novel signatures

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