It's a big subject ;-D
As are most of the cosmological subjects discussed in this thread.
Summarisation can help aid our understanding of them.
We can't all be Nobel prize winning cosmologists.
Saul Perlmutter
This article explains how ‘cosmic gravity’ is about 1% weaker than galactic gravity and is causing serious problems with Einstein’s GR
https://www.livescience.com/physics...rite-the-rules-of-the-universe-study-suggests
https://www.livescience.com/physics...rite-the-rules-of-the-universe-study-suggests
I read the above article about the "cosmic glitch" the other night, but it gave no indication of what the required "fix" to general relativity is.
Elsewhere I read that the "fix" is an alteration to the value of the gravitational constant and would be applied as calculations approach the "superhorizon" - the maximum distance light could have traveled since the origin of the universe.
P.S. A 'glitch' in the gravitational constant is mentioned in the original research paper: https://iopscience.iop.org/article/10.1088/1475-7516/2024/03/045
It appears that the 'fix' is up for further exploration as its application is at the expense of spoiling fits to "the baryonic acoustic oscillation scale" in galaxy surveys!
Elsewhere I read that the "fix" is an alteration to the value of the gravitational constant and would be applied as calculations approach the "superhorizon" - the maximum distance light could have traveled since the origin of the universe.
P.S. A 'glitch' in the gravitational constant is mentioned in the original research paper: https://iopscience.iop.org/article/10.1088/1475-7516/2024/03/045
It appears that the 'fix' is up for further exploration as its application is at the expense of spoiling fits to "the baryonic acoustic oscillation scale" in galaxy surveys!
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