A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified $Λ$CDM Framework · HackerPapers discussions

A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified $Λ$CDM Framework — HN submission

Tue, 29 Oct 2019 21:27:01 GMT

A Unifying Theory of Dark Energy and Dark Matter (2018)

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

A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified $Λ$CDM Framework — mentioned by phs318u

Thu, 06 Dec 2018 01:23:06 GMT

Physics is highly mathematical and as such, can indeed be "tested" (i.e. proven) to be consistent with mathematical laws. This is fairly straightforward (for suitably mathematically literate people). The real issues are: 1. can the theory make testable predictions that can be verified by observation? e.g. string theory has had issues with this. 2. what does <wierd-mathematical-construct> "mean"? e.g. negative mass, spooky action at a distance, spacetime singularity. In practice, only 1 really matters. However, 2 tends to bug a lot of people (consider the arguments around what the quantum…

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

A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified $Λ$CDM Framework — mentioned by FabHK

Wed, 05 Dec 2018 23:43:21 GMT

That's what the article (https://arxiv.org/pdf/1712.07962.pdf) says: > In theories of quantum gravity, gravitation is mediated by the graviton – a massless, spin-2, boson. This means that any pair of negative masses would attract, and not repel as suggested in this theory. However, there are also theoretical arguments that gravitons cannot, and will not ever, be detected experimentally (Rothman & Boughn 2006). There appear to be two options: either it is possible that the graviton could be modelled as a bound state of a positive and a negative mass, in a theory of composite gravity or some…

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

A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified $Λ$CDM Framework — mentioned by autopoiesis

Wed, 05 Dec 2018 17:31:03 GMT

Please post links to the arXiv abstract pages, everyone: we don't always want to download a PDF just to read the abstract! https://arxiv.org/abs/1712.07962 Edit to add: the abstract pages also often contain useful extra information, such as (in this case) a link to YouTube videos of the simulations -- https://www.youtube.com/channel/UC8ltFtaETXDphec0l-VxMsg -- or the publication history (in this case, a DOI is given).

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

A Unifying Theory of Dark Energy and Dark Matter: Negative Masses and Matter Creation within a Modified $Λ$CDM Framework — mentioned by galadran

Wed, 05 Dec 2018 17:00:46 GMT

Paper: https://arxiv.org/pdf/1712.07962.pdf Not a physicist, but my summary of the author's point would be: If you allow for matter with a negative mass and plug it into a n-body simulation. You seem to get what looks like dark matter from first principles. Namely, a halo of non interacting matter around galaxies in just the right "non-cuspy" shape. Their conclusion is that this is worth considering, as almost all mainstream cosmology makes the assumption that mass >= 0, despite the fact mass <=0 doesn't seem to violate any physical invariants we know. The idea is persuasively simple. Every…

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