So what do we all think of this guy’s
ideas on gravity?.
So what do we all think of this guy’s
ideas on gravity?.
So what is “information” in his scheme of things?
I haven’t personally looked at it closely and probably won’t, butbfolks reckon it solves some large scale problems while kind of messing up some smaller subgalactic scale stuff.
Bubblecar said:
So what is “information” in his scheme of things?
I have no information on that.
Never heard of him before 1/2 an hour ago.
Seems to be something to do with entropy.
(whatever that is)
Interesting he has a twin brother also a theoretical and string theory physicist.
I wonder if they think very similar and working together have double the brain power
Bubblecar said:
Why information is central to physics and the universe itself
Ordering this one, seems a worthy read.
https://www.bookdepository.com/Ascent-Information-Caleb-Scharf/9780593087251?ref=grid-view&qid=1660697666717&sr=1-2
The Rev Dodgson said:
So what do we all think of this guy’s
ideas on gravity?.
Um, who?
Oh, “Emergent gravity”. That’s been kicking around for a few years now, and does seem like a real possibility.
> He also didn’t think there was such a thing as “dark matter” – a useful construct which is supposedly taking up 27% of the known universe (but is yet to be observed).
No. With each new observation that comes in the support for the existence of dark matter increases. The latest is the discovery of about six separate streams of dark matter through our stellar neighbourhood. In DR3 data from Gaia.
> based on string theory, quantum information theory and the physics of black holes, gravity is an “entropic” force that comes into existence as a result of information associated with the positions of material bodies.
I don’t get it. Information is associated with entropy, yes. Black holes are associated with entropy, yes. But it doesn’t follow that the gravity of black holes is due to information.
https://en.wikipedia.org/wiki/Entropic_gravity
> At its simplest, the theory holds that when gravity becomes vanishingly weak—levels seen only at interstellar distances—it diverges from its classically understood nature and its strength begins to decay linearly with distance from a mass. Entropic gravity provides an underlying framework to explain Modified Newtonian Dynamics, or MOND.
In other words, it’s tied in with f(r)
gravity theories.
Got a garbage bin nearby?
——
My own idea is the the separation between GR (gravity) and QM (strong force) came about by symmetry breaking in the early universe, at about the same time as the symmetry breaking between time and inverse temperature.
Cymek said:
Interesting he has a twin brother also a theoretical and string theory physicist.I wonder if they think very similar and working together have double the brain power
… and do they have spooky intellectual interaction at a distance?
Bubblecar said:
Bubblecar said:
Why information is central to physics and the universe itself
Ordering this one, seems a worthy read.
https://www.bookdepository.com/Ascent-Information-Caleb-Scharf/9780593087251?ref=grid-view&qid=1660697666717&sr=1-2
I wonder how you are supposed to pronounce “dataome”.
It seems to me that “information” as in a fundamental property of matter, and “information” as in what humans store in books, internet storage systems, and on public toilet walls, are two very different “things”.
Not that I know anything about that stuff.
The Rev Dodgson said:
Bubblecar said:
So what is “information” in his scheme of things?
I have no information on that.
Never heard of him before 1/2 an hour ago.
Seems to be something to do with entropy.
(whatever that is)
I have mentioned him over the last few years. Emergent gravity. needs more work.