Timeline for How can space expand?
Current License: CC BY-SA 3.0
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| Feb 21, 2021 at 17:24 | comment | added | John Rennie | @Edouard The Milne metric is just the Minkowski metric written in curved coordinates. If you calculate the Riemann tensor from it the result is zero. | |
| Feb 21, 2021 at 14:04 | comment | added | Edouard | --At arxiv.org/pdf/astro-ph/0610590.pdf, Chodorowski felt (in its Section 6) that the expansion of Milne's empty universe derives entirely from its coordinate system, quotes Lineweaver & Davis (2003) as claiming that spatial expansion isn't "a force or drag" carrying objects with it, and claims that the expansion of space, per se, only occurs thru an inappropriate extension of SR to cosmology. He doesn't mention gravitational waves: Might their observation (@2014) justify the difference between your conclusion and his own (that c might vary between any pair of inertial frames)? | |
| Mar 3, 2014 at 14:57 | history | answered | John Rennie | CC BY-SA 3.0 |