https://hackerpaper.kaipfister.de/p/1308.6587/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=30458324urn:hackerpapers:mention:1308.6587:30458324Thu, 24 Feb 2022 18:27:53 GMT<p>Again, small caveat that to keep this close to ELI25, I am abusing some things (including changes in sign) in a way an expert will notice [they can refer to [1] where the signs and frames are dealt with carefully], but I believe this does not qualitatively affect the explanations you&#x27;re looking for. The Brans-Dicke (BD) coupling constant \omega can be constant everywhere in a specifically-modelled universe, and usually is. What varies by point in spacetime is the strength of the scalar field. \omega just relates the strength of that scalar field to its gravitational effects on matter. A BD…</p><p><a href="https://hackerpaper.kaipfister.de/p/1308.6587/">Paper and discussion history</a>. A mention is not an endorsement.</p>gr-qc