Comments on "Note on varying speed of light theories"

Abstract

In a recent note Ellis criticizes varying speed of light theories on the grounds of a number of foundational issues. His reflections provide us with an opportunity to clarify some fundamental matters pertaining to these theories.

References in corpus (29)

• Lorentz invariance with an invariant energy scale
• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• A Search for Time Variation of the Fine Structure Constant
• Generalized Lorentz invariance with an invariant energy scale
• Gravity's Rainbow
• A time varying speed of light as a solution to cosmological puzzles
• Superluminary Universe: A Possible Solution to the Initial Value Problem in Cosmology
• Limits on the time variation of the electromagnetic fine-structure constant in the low energy limit from absorption lines in the spectra of distant quasars
• A Simple Varying-alpha Cosmology
• Cosmologies with Varying Light-Speed
• New varying speed of light theories
• Probing the cosmological variation of the fine-structure constant: Results based on VLT-UVES sample
• Covariant and locally Lorentz-invariant varying speed of light theories
• `c' is the speed of light, isn't it?
• Varying-$\alpha$ Theories and Solutions to the Cosmological Problems
• Dynamical Mechanism for Varying Light Velocity as a Solution to Cosmological Problems
• Non-Linear Relativity in Position Space
• Geometrodynamics of Variable-Speed-of-Light Cosmologies
• Quantum Gravity, the Origin of Time and Time's Arrow
• Scalar-Tensor Gravity Theory For Dynamical Light Velocity
• Bi-metric Gravity and "Dark Matter"
• Fine-structure constant variability, equivalence principle and cosmology
• Is it e or is it c? Experimental Tests of Varying Alpha
• Stars and black holes in varying speed of light theories
• Spontaneous Violation of Lorentz Invariance and Ultra-High Energy Cosmic Rays
• A scalar-tensor cosmological model with dynamical light velocity
• Could quantum gravity be tested with high intensity Lasers?
• Vector field mediated models of dynamical light velocity
• Scale Invariant Spectrum from Variable Speed of Light Metric in a Bimetric Gravity Theory

Cited by in corpus (24)

• Bimetric varying speed of light theories and primordial fluctuations
• The minimally extended Varying Speed of Light (meVSL)
• Variable Speed of Light Cosmology, Primordial Fluctuations and Gravitational Waves
• Measuring the speed of light with Baryon Acoustic Oscillations
• A search for the variation of speed of light using galaxy cluster gas mass fraction measurements
• Probing the constancy of the speed of light with future galaxy survey: the case of SKA and Euclid
• A viable varying speed of light model in the RW metric
• Recovering a redshift-extended VSL signal from galaxy surveys
• Cyclic multiverses
• Modelling spatial variations of the speed of light
• Cosmological solutions of time varying speed of light theories
• Examining the validity of the minimal varying speed of light model through cosmological observations: relaxing the null curvature constraint
• Cosmography of the minimally extended Varying Speed of Light Model
• On possible origin of an anisotropy in the speed of light in vacuum
• Solar System planetary tests of \dot c/c
• Measuring the speed of light with cosmological observations: current constraints and forecasts
• Thermodynamics in variable speed of light theories
• New analysis of SNeIa Pantheon Catalog: Variable speed of light as an alternative to dark energy
• A mechanism to generate varying speed of light via Higgs-dilaton coupling: Theory and cosmological applications
• Perturbation Theory in the Minimally Extended Varying Speed of Light (meVSL) Model
• Two restrictions in the theories that include $G(t)$ and $c(t)$ varying with time
• f(R) cosmological solutions with varying speed of light
• The Variable-c Cosmology as a Solution to Pioneer Anomaly
• A model-independent test of speed of light variability with cosmological observations