Title: Entropic gravity Post by: Tglad on December 16, 2016, 02:50:42 AM Seems very interesting: https://arxiv.org/pdf/1611.02269v2.pdf Erik Verlinde has been working on this for many years, I really like the concept, even if its way over my head. He is saying that space and time and (Einstein's) gravity are all emergent from the basic rules of quantum theory. He is also (I think) saying that the cosmological horizon (the farthest we can see), has a one-way effect on particles, like a black hole event horizon, which somehow causes an extra gravity-like force at really large scales, and this extra force explains the observations usually attributed to dark matter. So, rather than 95% of the universe's matter being unknown, it isn't matter at all, just a different gravity strength. But better than other modified gravity theories because it doesn't contain any arbitrary parameters, and it also explains the existence of gravity in the first place. On the down side, this guy thinks his paper is an "absolutely worthless pile of feces": http://motls.blogspot.com.au/2016/11/verlindes-de-sitter-mond-is-highly.html oh |