The S8 tension in light of updated redshift-space distortion data and PAge approximation

Huang, Lu; Huang, Zhiqi; Zhou, Huan; Li, Zhuoyang

doi:10.1007/s11433-021-1838-1

Cited by 12 publications

(12 citation statements)

References 66 publications

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“…4, datasets are compared via fitting the background IDL without RSD data (blue) and the perturbative IDL data (RSD+CC+BAO+SNe) with inclusions of RSD 2018 (green) and RSD 2021 (orange) data to the ΛCDM (top panel), PAge (medium panel) and MAPAge (bottom panel) models. In the top panel, S 8 value is uplifted from S 8 = 0.759 ± 0.029 to S 8 = 0.812 ± 0.027 so that the usual S 8 tension disappears for the ΛCDM model when updating the RSD data from RSD 2018 dataset to RSD 2021 dataset as also shown in [63]. In the medium and bottom panels, the cosmological constraints on the PAge/MAPAge parameter space are stable regardless of datasets adopted for data fitting, therefore, both the background and perturbative IDL data are equally applicable in locating the PAge/MAPAge parameter space for the late-time new-physics models.…”

Section: B Data Comparisonmentioning

confidence: 77%

“…For RSD data, we test for three f σ 8 compilations [63,86,101] (dubbed as RSD 2017, 2018 and 2021 data sets) as also listed in Tab. III for your convenience.…”

Section: Rsd Datamentioning

confidence: 99%

“…The RSD growth data measures a different quantity called f σ 8 (z) (defined later below), which could lead to a constraint on S 8 = 0.700 +0.038 −0.037 from the most recent RSD selected data set [61]. The large variance in the inferred values of S 8 parameter makes us wander if there is really a S 8 tension at all [62,63].…”

Section: Introductionmentioning

confidence: 99%

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No-go guide for late-time solutions to the Hubble tension: Matter perturbations

Cai¹,

Guo²,

Wang³

et al. 2022

Preprint

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The Hubble tension seems to be a crisis with ∼ 5σ discrepancy between the most recent local distance ladder measurement from Type Ia supernovae calibrated by Cepheids and the global fitting constraint from the cosmic microwave background data. To narrow down the possible late-time solutions to the Hubble tension, we have used in a recent study [Phys. Rev. D 105 (2022) L021301] an improved inverse distance ladder method calibrated by the absolute measurements of the Hubble expansion rate at high redshifts from the cosmic chronometer data, and found no appealing evidence for new physics at the late time beyond the ΛCDM model characterized by a parametrization based on the cosmic age. In this paper, we further investigate the perspective of this improved inverse distance ladder method by including the late-time matter perturbation growth data. Independent of the dataset choices, model parametrizations, and diagnostic quantities (S8 and S12), the new physics at the late time beyond the ΛCDM model is strongly disfavoured so that the previous late-time no-go guide for the Hubble tension is further strengthened.

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Section: B Data Comparisonmentioning

confidence: 77%

“…For RSD data, we test for three f σ 8 compilations [63,86,101] (dubbed as RSD 2017, 2018 and 2021 data sets) as also listed in Tab. III for your convenience.…”

Section: Rsd Datamentioning

confidence: 99%

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No-go guide for late-time solutions to the Hubble tension: Matter perturbations

Cai¹,

Guo²,

Wang³

et al. 2022

Preprint

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“…Compared to the logarithm polynomial approximation, the recently proposed PAge approximation displays many prominent advantages in blindly modelling the late cosmological expansion history (Huang 2020;Luo et al 2020;Huang et al 2021bHuang et al ,a, 2022Cai et al 2022a,b;Huang 2022). Faithfully obeying the asymptotic matter-dominated assumption 1 1+𝑧 ∝ 𝑡 p age accelerate (q 0 < 0) decelerate (q 0 > 0)…”

Section: Cosmological Scenementioning

confidence: 99%

“…The key is to adopt modelindependent approaches and independent samples. To avoid model dependence, we perform our analyses in PAge approximation (Parameterization based on cosmic Age) which is a general approximation of many late-time cosmological models and a nearly modelindependent framework (Huang 2020;Luo et al 2020;Huang et al 2021bHuang et al ,a, 2022Cai et al 2022a,b;Huang 2022). In addition, we take the most up-to-date QSO samples compiled by Lusso et al (2020) as our data set.…”

Section: Introductionmentioning

confidence: 99%

Redshift Evolution and Non-Universal Dispersion of Quasar Luminosity Correlation

Li¹,

Lu²,

Wang³

2022

Preprint

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The standard ΛCDM model is recently reported to deviate from the high-redshift Hubble diagram of type Ia supernovae (SNe) and quasars (QSOs) at ∼ 4𝜎 confidence level. In this work, we combine the PAge approximation (a nearly model-independent parameterization) and a high-quality QSO sample to search for the origins of the deviation. By visualizing the ΛCDM model and the marginalized 3𝜎 constraints of SNe+QSOs into PAge space, we confirm that the SNe+QSOs constraints in both flat and non-flat PAge cases are in remarkable tension with the standard ΛCDM cosmology. Next, we investigate the tension from the perspective of redshift-evolution effects. We find that the QSO correlation coefficient 𝛾 calibrated by SNe+low-z QSOs and SNe+high-z QSOs shows ∼ 2.7𝜎 and ∼ 4𝜎 tensions in flat and non-flat universes, respectively. The tensions for intrinsic dispersion 𝛿 between different data sets are found to be > 4𝜎 in both flat and non-flat cases. These results indicate that the QSO luminosity correlation suffers from significant redshift evolution and non-universal intrinsic dispersion. Using a redshiftdependence correlation to build QSO Hubble diagram could lead to biases. Thus, the ∼ 4𝜎 deviation from the standard ΛCDM probably originates from the redshift-evolution effects and non-universal dispersion of the QSO luminosity correlation rather than new physics.

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