Concordance and Discordance in Cosmology

Abstract

The success of present and future cosmological studies is tied to the ability to detect discrepancies in complex data sets within the framework of a cosmological model. Tensions caused by the presence of unknown systematic effects need to be isolated and corrected to increase the overall accuracy of parameter constraints, while discrepancies due to new physical phenomena need to be promptly identified. We develop a full set of estimators of internal and mutual agreement and disagreement, whose strengths complement each other. These allow to take into account the effect of prior information and compute the statistical significance of both tensions and confirmatory biases. We apply them to a wide range of state of the art cosmological probes and show that these estimators can be easily used, regardless of model and data complexity. We derive a series of results that show that discrepancies indeed arise within the standard LCDM model. Several of them exceed the probability threshold of 95% and deserve a dedicated effort to understand their origin.

31 pages, 8 figures

References in corpus (20)

• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Bayes in the sky: Bayesian inference and model selection in cosmology
• New Parallaxes of Galactic Cepheids from Spatially Scanning the Hubble Space Telescope: Implications for the Hubble Constant
• H0LiCOW V. New COSMOGRAIL time delays of HE0435-1223: $H_0$ to 3.8% precision from strong lensing in a flat $\Lambda$CDM model
• The 1% Concordance Hubble Constant
• CMB-S4 Science Book, First Edition
• Tension between the power spectrum of density perturbations measured on large and small scales
• Measuring the effective complexity of cosmological models
• Bayesian Selection of sign(mu) within mSUGRA in Global Fits Including WMAP5 Results
• Survey geometry and the internal consistency of recent cosmic shear measurements
• Compatibility of Planck and BICEP2 in the Light of Inflation
• Tensions between direct measurements of the lens power spectrum from Planck data
• Neutrino Mass Priors for Cosmology from Random Matrices
• Internal Robustness: systematic search for systematic bias in SN Ia data
• Comparing Planck and WMAP: Maps, Spectra, and Parameters
• Conservative cosmology: combining data with allowance for unknown systematics
• Assessing Consistency Between WMAP 9-year and Planck 2015 Temperature Power Spectra
• Effect of Template Uncertainties on the WMAP and Planck Measures of the Optical Depth Due To Reionization
• Testing the mutual consistency of different supernovae surveys

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