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Cosmography of the Minimally Extended Varying Speed of Light Model
Version 1
: Received: 27 February 2024 / Approved: 27 February 2024 / Online: 28 February 2024 (10:35:56 CET)
A peer-reviewed article of this Preprint also exists.
Lee, S. Cosmography of the Minimally Extended Varying Speed-of- Light Model. Astronomy 2024, 3, 100-113. Lee, S. Cosmography of the Minimally Extended Varying Speed-of- Light Model. Astronomy 2024, 3, 100-113.
Abstract
Cosmography, as an integral branch of cosmology, strives to characterize the Universe without relying on pre-determined cosmological models. This model-independent approach utilizes Taylor series expansions around the current epoch, providing a direct correlation with cosmological observations and the potential to constrain theoretical models. Various observable quantities in cosmology can be described as different combinations of cosmographic parameters. Furthermore, one can apply cosmography to models with a varying speed of light. In this case, the Hubble parameter can be expressed by the same combination of cosmographic parameters for both the standard model and varying speed of light models. However, for the luminosity distance, the two models are represented by different combinations of cosmographic parameters. Hence, luminosity distance might provide a method to constrain the parameters in varying speed-of-light models.
Keywords
cosmography; varying speed of light models; standard cosmological model; Hubble parameter
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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