Date: 17/08/2022 10:29:45
From: The Rev Dodgson
ID: 1921877
Subject: Erik Verlinde

So what do we all think of this guy’s
ideas on gravity?.

Reply Quote

Date: 17/08/2022 10:33:39
From: Bubblecar
ID: 1921878
Subject: re: Erik Verlinde

So what is “information” in his scheme of things?

Reply Quote

Date: 17/08/2022 10:36:21
From: dv
ID: 1921879
Subject: re: Erik Verlinde

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.

Reply Quote

Date: 17/08/2022 10:36:45
From: The Rev Dodgson
ID: 1921880
Subject: re: Erik Verlinde

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)

Reply Quote

Date: 17/08/2022 10:37:44
From: Cymek
ID: 1921881
Subject: re: Erik Verlinde

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

Reply Quote

Date: 17/08/2022 10:51:54
From: Bubblecar
ID: 1921888
Subject: re: Erik Verlinde

Why information is central to physics and the universe itself

Reply Quote

Date: 17/08/2022 10:56:33
From: Bubblecar
ID: 1921891
Subject: re: Erik Verlinde

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

Reply Quote

Date: 17/08/2022 11:01:35
From: mollwollfumble
ID: 1921894
Subject: re: Erik Verlinde

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.

Reply Quote

Date: 17/08/2022 11:02:47
From: The Rev Dodgson
ID: 1921895
Subject: re: Erik Verlinde

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?

Reply Quote

Date: 17/08/2022 11:11:46
From: The Rev Dodgson
ID: 1921897
Subject: re: Erik Verlinde

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.

Reply Quote

Date: 17/08/2022 11:23:16
From: transition
ID: 1921903
Subject: re: Erik Verlinde

The Rev Dodgson said:


So what do we all think of this guy’s
ideas on gravity?.

reading that

Reply Quote

Date: 17/08/2022 11:54:46
From: Bogsnorkler
ID: 1921916
Subject: re: Erik Verlinde

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.

Reply Quote