Redshift drift in varying speed of light cosmology

Citations of this article
Mendeley users who have this article in their library.


We derive a redshift drift formula within the framework of varying speed of light (VSL) theory using the specific ansatz for the variability of c(t) = c0an(t). We show that negative values of the parameter n, which correspond to diminishing value of the speed of light during the evolution of the universe, effectively rescale dust matter to become little negative pressure matter, and the cosmological constant to became phantom. Positive values of n (growing c(t)) make VSL model to become more like Cold Dark Matter (CDM) model. Observationally, there is a distinction between the VSL model and the ACDM model for the admissible values of the parameter n ~ -10-5, though it will be rather difficult to detect by planned extremely large telescopes (EELT, TMT, GMT) within their accuracy. © 2013 The Authors. Published by Elsevier B.V.




Balcerzak, A., & Da̧browski, M. P. (2014). Redshift drift in varying speed of light cosmology. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 728, 15–18.

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free