Well twelve years later we are no nearer understanding what DM is...
Not found in any detector nor in the LHC...
My guess would be it is a scalar field, but then what do I know?
Garth
Such as:-
Cosmic Conspiracies, 2 April 2006,
Natural Dark Energy[Natural Dark Energy ,30 March 2007,
Down-sizing Forever, 31 March 2008,
A Farewell to Falsifiability, 1 April 2015,
Garth :oldwink:
A new kind of radio transient: ERBs
arXiv:1903.12412v1 [astro-ph.HE] 29 Mar 201
Another fascinating paper by Ali Frolop et al. in yesterdays arXiv:
Garth :oldwink:
Fair enough, they don't actually travel; perhaps 'teleport' might be a better word!
As I said, at the interface of gravitation and quantum mechanics confusion often reigns, only to be resolved when a quantum gravity theory arrives.
Garth
Confusion often arises at the interface of gravitation and quantum mechanics.
Gravitational forces are transmitted by virtual gravitons as electromagntic forces are transmitted by virtual photons.
And in the weird world of QM such particles travel faster than light, as Peter said, in apparent...
It is published in a peer reviewed journal here:
Cosmological evolution of the Higgs boson’s vacuum expectation value
From that journal's webpage:
Garth
Nevertheless the Age Problem in the early universe appears to remain, as does the tension between the CMB derivation of Hubble's Parameter and that derived from weak lensing KiDS-450: testing extensions to the standard cosmological model. The 'Coasting Model' may indeed have problems but it also...
We have discussed here on PF the question of whether there is an Age Problem in the early universe for many years now, since 2005:
Is there an Age Problem in the Mainstream Model? (Oct 2005)
Cosmic age problem ? (Nov 2008)
Is There An Age Problem In The Early LCDM Model? (Jun 2010)
Massive...
But there are other reasons to work on alternatives.
Testable science requires alternative models for the standard model to be testable against.
Although that is difficult when the standard model is as flexible as Inflation.
A less flexible alternative that also passes observational tests...
It does seem that we live in a favourable 'cosmological time zone' in which the universe is old enough for intelligent beings to evolve and discover cosmological history and yet not too old that the neccesary information (CMB etc.) has become undetectable...
Garth
As I have said in other threads you might be interested in the Introducing the Dirac-Milne universe paper.
It has great problems, though it does explain the matter-anti-matter asymmetry.
Garth