The influence of the cosmological expansion on local systems · HackerPapers discussions

The influence of the cosmological expansion on local systems — mentioned by raattgift

Sat, 08 Dec 2018 18:00:51 GMT

I'm afraid I'm gonna have to drop the ball on discussion of extended objects. I can't shake the seeming-realization that restorative forces within the extended object must generate a gravitational backreaction, and down that path lies too much math to write down first (in order to summarize later), and I don't trust that starting with an English description avoids a gross mis-characterization. However, I made a point about the expansion being in the curvature scalar, and Carroll has a lecture which supports this view for lambdavacuum (eqn 15 at…

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The influence of the cosmological expansion on local systems — mentioned by raattgift

Tue, 10 Oct 2017 20:34:55 GMT

> "usable link" How much technical detail do you want? Starting with the "gimme hardcore!" end, I was thinking of how to construct an argument using vierbiens and then how to boil it down to something accessible (or at least representable on LaTeX-free HN), and then remembered that it had already been done by Cooperstock et al.: http://xxx.lanl.gov/abs/astro-ph/9803097 The tl;dr is that if the cosmological expansion induces strain on matter, the strain is too small to be measurable. Retreating from the hardest of answers, Peter Coles has an old moderate-detail article on this at…

Paper and discussion history. A mention is not an endorsement.