A model-independent test of speed of light variability with cosmological observations

Abstract

A powerful test of fundamental physics consists on probing the variability of fundamental constants in Nature. Although they have been measured on Earth laboratories and in our Solar neighbourhood with extremely high precision, it is crucial to carry out these tests at the distant Universe, as any significant variation of these quantities would immediately hint at new physics. We perform a cosmological measurement of the speed of light using the latest Type Ia Supernova and cosmic chronometer observations at the redshift range $0<z<2$. Our method relies on the numerical reconstruction of these data in order to circumvent {\it a priori} assumptions of the underlying cosmology. We confirm the constancy of the speed of light at such redshift range, reporting two $\sim 5$\% precision measurements of $c=(3.20\pm 0.16)\times 10^5{\mathrm{km}\mathrm{s}}^{-1}$ in $z\simeq 1.58$, and $c=(2.67\pm 0.14)\times 10^5{\mathrm{km}\mathrm{s}}^{-1}$ in $z\simeq 1.36$, depending on the reconstruction method, at a $1\sigma$ confidence level.

arXiv comment13 pages, 3 figures. Accepted for publication in JCAP

References in corpus (94)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Modified Gravity and Cosmology
• The Confrontation between General Relativity and Experiment
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• In the Realm of the Hubble tension $-$ a Review of Solutions
• Testing General Relativity with Present and Future Astrophysical Observations
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• The fundamental constants and their variation: observational status and theoretical motivations
• KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
• Varying constants, Gravitation and Cosmology
• Planck evidence for a closed Universe and a possible crisis for cosmology
• A time varying speed of light as a solution to cosmological puzzles
• Reconstruction of dark energy and expansion dynamics using Gaussian processes
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Modeling Uncertainty
• Curvature tension: evidence for a closed universe
• Superluminary Universe: A Possible Solution to the Initial Value Problem in Cosmology
• Gaussian Process Cosmography
• New varying speed of light theories
• $H_0$ from cosmic chronometers and Type Ia supernovae, with Gaussian Processes and the novel Weighted Polynomial Regression method
• Cosmic distance-duality as probe of exotic physics and acceleration
• A buyer's guide to the Hubble Constant
• Covariant and locally Lorentz-invariant varying speed of light theories
• The status of varying constants: a review of the physics, searches and implications
• The Cardassian expansion revisited: constraints from updated Hubble parameter measurements and Type Ia Supernovae data
• `c' is the speed of light, isn't it?
• The Large-Scale Smoothness of the Universe
• Inhomogeneity and the foundations of concordance cosmology
• Testing the Distance-Duality Relation with Galaxy Clusters and Type Ia Supernovae
• Dynamical Mechanism for Varying Light Velocity as a Solution to Cosmological Problems
• Establishing homogeneity of the universe in the shadow of dark energy
• Solutions to the Quasi-flatness and Quasi-lambda Problems
• Is the Universe homogeneous?
• Evidence for a Lower Value for $H_0$ from Cosmic Chronometers Data?
• Curvature vs Distances: testing the FLRW cosmology
• Null tests of the cosmological constant using supernovae
• Solving the Flatness and Quasi-flatness Problems in Brans-Dicke Cosmologies with a Varying Light Speed
• Measuring the speed of light with ultra-compact radio quasars
• Quantifying the $S_8$ tension with the Redshift Space Distortion data set
• Geometrodynamics of Variable-Speed-of-Light Cosmologies
• Scalar-Tensor Gravity Theory For Dynamical Light Velocity
• A test for cosmic distance duality
• Two new tests to the distance duality relation with galaxy clusters
• Measurements of $H_0$ and reconstruction of the dark energy properties from a model-independent joint analysis
• Does a varying speed of light solve the cosmological problems?
• Constraints on Lorentz invariance violation from HAWC observations of gamma rays above 100 TeV
• Parametric and nonparametric methods hint dark energy evolution
• Novel null tests for the spatial curvature and homogeneity of the Universe and their machine learning reconstructions
• Probing the cosmic distance duality with strong gravitational lensing and supernovae Ia data
• Improved limits on Lorentz invariance violation from astrophysical gamma-ray sources
• Non-parametric reconstruction of the cosmological \textit{jerk} parameter
• Neural Network Reconstruction of Late-Time Cosmology and Null Tests
• Inferring $S_8(z)$ and $\gamma (z)$ with cosmic growth rate measurements using machine learning
• Note on Varying Speed of Light Cosmologies
• Assessment of the cosmic distance duality relation using Gaussian Process
• Testing the speed of light over cosmological distances: the combination of strongly lensed and unlensed supernova Ia
• Quantifying the evidence for the current speed-up of the Universe with low and intermediate-redshift data. A more model-independent approach
• Dodging the cosmic curvature to probe the constancy of the speed of light
• Towards a model-independent reconstruction approach for late-time Hubble data
• Model-Independent Constraints on Lorentz Invariance Violation via the Cosmographic Approach
• The minimally extended Varying Speed of Light (meVSL)
• Variable Speed of Light Cosmology, Primordial Fluctuations and Gravitational Waves
• A data-driven Reconstruction of Horndeski gravity via the Gaussian processes
• Model-independent constraints on Lorentz invariance violation: implication from updated Gamma-ray burst observations
• Revisiting a non-parametric reconstruction of the deceleration parameter from combined background and the growth rate data
• Measuring the speed of light with Baryon Acoustic Oscillations
• Null tests of the standard model using the linear model formalism
• Redshift drift in varying speed of light cosmology
• A test of cosmic distance duality relation using SPT-SZ galaxy clusters, Type Ia supernovae, and cosmic chronometers
• Cosmology with relativistically varying physical constants
• Observational constraint on the varying speed of light theory
• Comments on "Note on varying speed of light theories"
• A model-independent reconstruction of dark sector interactions
• Limits on the Lorentz Invariance Violation from UHECR astrophysics
• Non-parametric reconstruction of cosmological matter perturbations
• J-PAS: forecasts on dark energy and modified gravity theories
• Search for Lorentz Invariance Violation from stacked Gamma-Ray Burst spectral lag data
• Vector field mediated models of dynamical light velocity
• A search for the variation of speed of light using galaxy cluster gas mass fraction measurements
• Covariant c-flation: a variational approach
• Multi-tasking the growth of cosmological structures
• Variation in the fine-structure constant, distance-duality relation and the next generation of high-resolution spectrograph
• Variation of the speed of light and a minimum speed in the scenario of an inflationary universe with accelerated expansion
• Statistical hierarchy of varying speed of light cosmologies
• Variation of the speed of light with temperature of the expanding universe
• Probing the constancy of the speed of light with future galaxy survey: the case of SKA and Euclid
• A null test of the Cosmological Principle with BAO measurements
• A statefinder luminosity distance formula in varying speed of light cosmology
• Null tests of the concordance model in the era of Euclid and the SKA
• Strong lensing systems and galaxy cluster observations as probe to the cosmic distance duality relation
• SNe Data Analysis in Variable Speed of Light Cosmologies without Cosmological Constant
• Modelling spatial variations of the speed of light
• A model independent constraint on the temporal evolution of the speed of light