Emergent Gravity and the Dark Universe · HackerPapers discussions

Emergent Gravity and the Dark Universe — mentioned by fallingfrog

Sun, 10 Mar 2024 03:57:03 GMT

I wonder how this relates to Erik Verlinde’s entropic gravity? https://arxiv.org/abs/1611.02269 It seems like this theory is proposing some entropic term on top of classical general relativity whereas Verlinde came up with a completely entropic theory of gravity. They both claim to explain dark matter.

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Emergent Gravity and the Dark Universe — mentioned by caublestone

Fri, 10 Mar 2017 22:12:17 GMT

Speaking of Bell's inequality, according to Erik Verlinde's theory on emergent gravity, gravity is an emergent force from the supersymmetry relationship of fundamental particles across the entirety of space and time. Each particle was encoded with a quantum memory state before a thermal energy source disrupted the tiny space and separated the paired particles across the galaxy. If this is true, I believe the observed violation of Bell's inequality could be explained by this pre space-time deterministic relationship that causes the force of gravity to emerge.…

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Emergent Gravity and the Dark Universe — mentioned by jessriedel

Sat, 17 Dec 2016 02:20:26 GMT

> Huh? The topic of the newscientist article is https://arxiv.org/abs/1612.03034 (it links to the PDF right at the bottom!) and in the preprint's references section is "Verlinde, E. P., 2016, preprint, (arXiv:1611.02269)", which is surely the "Verlinde's theory of Emergent Gravity" that Brouwer et al. mean. The evidence in Brouwer et al. is shaky, and I am not a fan of Verlinde's paper (although it is interesting), but I don't see what it has to do with MOND. Indeed, in Brouwer et al., I can't even see a reference to MOND. Yea, I'm well aware of all this. Brouwer et al. are jumping on the…

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Emergent Gravity and the Dark Universe — mentioned by raattgift

Sat, 17 Dec 2016 01:34:17 GMT

Huh? The topic of the newscientist article is https://arxiv.org/abs/1612.03034 (it links to the PDF right at the bottom!) and in the preprint's references section is "Verlinde, E. P., 2016, preprint, (arXiv:1611.02269)", which is surely the "Verlinde's theory of Emergent Gravity" that Brouwer et al. mean. The evidence in Brouwer et al. is shaky, and I am not a fan of Verlinde's paper (although it is interesting), but I don't see what it has to do with MOND. Indeed, in Brouwer et al., I can't even see a reference to MOND. Only in the newscientist article is there a scattering of the…

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Emergent Gravity and the Dark Universe — mentioned by fjarlq

Fri, 16 Dec 2016 21:47:43 GMT

From the discussion section of Verlinde's paper[1]: > We have shown that the emergent laws of gravity, when one takes into account the volume law contribution to the entropy, start to deviate from the familiar gravitational laws precisely in those situations where the observations tell us they do. We have only made use of the natural constants of nature, and provided reasonably straightforward arguments and calculations to derive the scales and the behavior of the observed phenomena. [..] > In our view this undercuts the common assumption that the laws of gravity should stay as they are, and…

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Emergent Gravity and the Dark Universe — mentioned by empath75

Fri, 16 Dec 2016 20:55:09 GMT

'Kills off dark matter" is probably overstating the case, but I love this theory because it ties together a lot of big ideas. Verlinde's paper is here: https://arxiv.org/abs/1611.02269

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Emergent Gravity and the Dark Universe — mentioned by raattgift

Wed, 14 Dec 2016 15:12:36 GMT

Verlinde's paper [ https://arxiv.org/abs/1611.02269 ] is the wrong place to be looking for an argument against dark matter. It starts with simply accepting that dark energy is part of the unremovable background of spacetime (in particular, his paper considers a de Sitter vacuum with a straightforward positive cosmological constant, and treats it as fully described by classical General Relativity (GR)) and then proposes an emergent thermal-entropic force that may produce deviations from General Relativity on galactic and cluster scales by way of a long-distance entanglement among the…

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Emergent Gravity and the Dark Universe — mentioned by ajkjk

Sun, 04 Dec 2016 20:41:25 GMT

I'm not rejecting his theory because of pride or blindness. I'm rejecting it because I evaluated it with my brain and determined it to be bad. I'm saying that it is possible to 'know for sure' in some cases, insofar as my brain is working correctly. This is 2+2=5 stuff. I'm as sure he is wrong from reading his writing as I am sure that 2+2=4, because it's dead simple reading comprehension to be able to tell, if you have a bit of physics background. I'm telling you that it seems like you don't have the background to evaluate theories correctly, and so you should take note that this is a bad…

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Emergent Gravity and the Dark Universe — mentioned by kleigenfreude

Sat, 19 Nov 2016 15:17:39 GMT

According to Verlinde, there is no dark matter. Tell me how he's wrong point-by-point. Just because gravity is emergent doesn't mean it still cannot have effects similar to what's been perhaps wrongly attributed to dark matter. You can't just say "Bullet Cluster" and "Dragonfly 44" and piss all over it without explanation. http://phys.org/news/2016-11-theory-gravity-dark.html http://www.forbes.com/sites/briankoberlein/2016/11/08/soluti... https://arxiv.org/abs/1611.02269

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Emergent Gravity and the Dark Universe — HN submission

Tue, 08 Nov 2016 16:40:45 GMT

Emergent Gravity and the Dark Universe

209 points; 80 discussion replies on HN. Paper and source history. A submission is not an endorsement.

Emergent Gravity and the Dark Universe — HN submission

Tue, 08 Nov 2016 08:25:33 GMT

Emergent Gravity and the Dark Universe

10 points; 1 discussion reply on HN. Paper and source history. A submission is not an endorsement.