Want to take part in these discussions? Sign in if you have an account, or apply for one below
Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.
started something. For the moment really just a glorified pointer to Buchert et al. 15 and putting Scharf 13 into perspective
expanded a bit more and introduced subsections.
found a useful conclusion of the arguments exchanged in the “backreaction debate”, in Ostrowski-Roukema 15, and added it as a quote (here)
added pointer to Coley 18, p. 28, where it is confirmed that it remains open whether cosmic inhomogeneity may have substantial backreaction on cosmic evolution (in view of the debate about a claim by Green-Wald to the contrary)
added pointer to
This is remarkable, as they claim an analytic solution exhibiting the effect:
Our analysis is based on the discovery of a closed ansatz for perturbations of the SM during the p$= 0$ epoch of the Big Bang which triggers instabilities that create unexpectedly large regions of accelerated uniform expansion within Einstein’s original theory without the cosmological constant. We prove that these accelerated regions introduce precisely the same range of corrections to redshift vs luminosity as are produced by the cosmological constant in the theory of Dark Energy.
Cool!
Should this hold water, and dark energy shown to be just an artifact of an inappropriate model, this would be the most dramatic triumph of rigour over handwaving in physics. Cosmology/HEP physics has entered an era of storytelling since the last decades, and this might well be what brings mathematical physics back to the forefront.
added pointer to today’s
added pointer to
1 to 11 of 11