A Viable Varying Speed of Light Model in the RW Metric

被引:0
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作者
Seokcheon Lee
机构
[1] Institute of Basic Science,Department of Physics
[2] Sungkyunkwan University,undefined
来源
Foundations of Physics | 2023年 / 53卷
关键词
Varying speed of light; Robertson–Walker metric; General covariance;
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摘要
The Robertson–Walker (RW) metric allows us to apply general relativity to model the behavior of the Universe as a whole (i.e., cosmology). We can properly interpret various cosmological observations, like the cosmological redshift, the Hubble parameter, geometrical distances, and so on, if we identify fundamental observers with individual galaxies. That is to say that the interpretation of observations of modern cosmology relies on the RW metric. The RW model satisfies the cosmological principle in which the 3-space always remains isotropic and homogeneous. One can derive the cosmological redshift relation from this condition. We show that it is still possible for us to obtain consistent results in a specific time-varying speed-of-light model without spoiling the success of the standard model. The validity of this model needs to be determined by observations.
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