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arXiv · 2108.06043

Cosmic distance duality as a probe of minimally extended varying speed of light

Seokcheon Lee
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Abstract

We obtain the current constraint on the minimally extended varying speed of light (meVSL) model by analyzing cosmic distance duality relation (CCDDR) of it, $D_{L}/D_{A}(1+z)^{-2} = (1+z)^{b/8}$. We use the Pantheon type Ia supernova (SNIa) data, the Hubble parameter $H(z)$ using the cosmic chronometers approach, and the cosmic microwave background (CMB) distance priors from the latest Planck data. We find that the current data show the 1-$\sigma$ deviation from the standard CCDDR. Thus, this provides the constraint on meVSL model and future precision observations might be able to put stronger constraints on it.

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Seokcheon Lee. 2021-08-13. Cosmic distance duality as a probe of minimally extended varying speed of light. https://arxiv.org/abs/2108.06043

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