Uncovering the Mystery of Quantum Foam

[setAI]

jeez SetAI, if that is as dumbed down as you can make it then there might not be much hope for me.

if you lived in a 16 bit video game- your world and everything in it will be 2D pixelated sprites [or rather a discreet matrix of possible pixel values from the program]- but the computer hardware running the game software isn't necissarily made of 2d pixels is it? so while it is true that your 16 bit world is granular this granularity is emergent and you cannot say that the universe/computer is granular itself-

One thing though does your theory require extra dimensions ?

computational cosmology agrees with the holographic principle- you start with bits of information with only 1 degree of freedom [on/off] whose causal connections determine the degrees of freedom/dimensionality of the space- so LESS dimensions are fundamental- but probably any number of dimensions can emerge from the computation- in fact since quantum logic gates have two inputs and two outputs four dimensions arise naturally in computational cosmology!

 

[nightcleaner]

if you lived in a 16 bit video game- your world and everything in it will be 2D pixelated sprites [or rather a discreet matrix of possible pixel values from the program]- but the computer hardware running the game software isn't necissarily made of 2d pixels is it? so while it is true that your 16 bit world is granular this granularity is emergent and you cannot say that the universe/computer is granular itself-



computational cosmology agrees with the holographic principle- you start with bits of information with only 1 degree of freedom [on/off] whose causal connections determine the degrees of freedom/dimensionality of the space- so LESS dimensions are fundamental- but probably any number of dimensions can emerge from the computation- in fact since quantum logic gates have two inputs and two outputs four dimensions arise naturally in computational cosmology!

Hi SetA1
This sounds interesting. Could you link to a primary source on computational cosmology? Who are your best authors on the subject? Who are you reading now? I believe I recall reading somewhere about our universe being a two dimensional holographic image on the event horizon of a BH. Is this part of what you are talking about?

Thanks,

nc

 

[spicerack]

computational cosmology agrees with the holographic principle- you start with bits of information with only 1 degree of freedom [on/off] whose causal connections determine the degrees of freedom/dimensionality of the space- so LESS dimensions are fundamental- but probably any number of dimensions can emerge from the computation- in fact since quantum logic gates have two inputs and two outputs four dimensions arise naturally in computational cosmology!

umm... so the simple answer is no it doesn't require extra dimensions but yes the theory has enough freedom in it to accommodate them

so now I'm hung up on "causal connections". Is that what trips the switches or what the switches are embedded in or am I off on a tangent again ?

and i very much appreciate the patience you have all shown. Thanks

 

[Kea]

...in fact since quantum logic gates have two inputs and two outputs four dimensions arise naturally in computational cosmology!

Yes, setAI, exactly! Only you make it sound so simple that I'm not sure many people here will suddenly be converted...there is a very deep sense in which
this explanation of four dimensionality is true.

Remember that quantum computation can be modeled by anyonic topological systems described mathematically by Jones polynomials...well, to be more accurate, modular functors...

Cheers
Kea

 

[setAI]

Hi SetA1
This sounds interesting. Could you link to a primary source on computational cosmology? Who are your best authors on the subject? Who are you reading now? I believe I recall reading somewhere about our universe being a two dimensional holographic image on the event horizon of a BH. Is this part of what you are talking about?

Thanks,

nc

the foundation of the computational universe is Dirac and Feynman- Marvin Minsky's Cellualr Vacuum- right now Seth Lloyd is blowing my mind [he's good at that] check the "Third Road" sticky for some interesting papers

David Deutsch and Sir Martin Rees are getting into this action lately as well

 

[nightcleaner]

Thanks again. I saw the Feynman book but havn't read it yet. Checking on the others.

nc

 

[spicerack]

Remember that quantum computation can be modeled by anyonic topological systems described mathematically by Jones polynomials...well, to be more accurate, modular functors...

How could i forget ?

so the proof is in the maths but without the maths what is a simple analogy that might be apt ?...a black hole as a computer spitting out info that constitutes a hologram reality projected onto a 4d screen like a moving graphic simulates 3d on a 2d computer screen ?

It still leaves a first cause and lasting effect open to speculation though doesn't it and where do we fit in ?

Are we just ghosts in the machine ?

I have so many questions yet so little understanding of the answers, should I even bother asking ?

cheers

 

[Kea]

Hi to spicerack

...so the proof is in the maths but without the maths what is a simple analogy that might be apt?...a black hole as a computer spitting out info that constitutes a hologram reality projected onto a 4d screen like a moving graphic simulates 3d on a 2d computer screen?

It still leaves a first cause and lasting effect open to speculation though doesn't it and where do we fit in? Are we just ghosts in the machine?

I have so many questions yet so little understanding of the answers, should I even bother asking?

Of course one should bother asking! What are we here for, after all? I like your image of black holes making holograms. As far as I see it though (but others may disagree) there's a big problem with this image - it all happens in some classical spacetime. This is the big conceptual prejudice that we need to get rid of. Quantum computation doesn't happen in an aether or anything like that. It generates our idea of spacetime, as setAI has been saying. Moreover, the classical reality is highly derived, relying as it does on a very large number of observations.

So, one needs to understand what an observation is...and once one recognises this fact one can either throw one's hands up in despair (as I did many times) or one can reluctantly accept that one might need to learn an awful lot of mathematics, because without it one's quantum intuition simply isn't good enough.

Regards
Kea

 

[Chronos]

Kea, that was a profound statement. But it does not stop you from seeking a better solution, does it? Have you published a paper yet? I would be very interested in hearing your thoughts - which are provacative. Despite my weakly supported arguments against Wiltshire, I admire his imagination and courage. I look forward to his future papers.

 

[Kea]

But it does not stop you from seeking a better solution, does it? Have you published a paper yet?

To the second question, if we restrict our consideration to this subject, the answer is technically no. Not for want of trying.

You are quite right about trying to seek better solutions. I wish I was better at thinking up simple analogies. Like the rubber sheet for GR: it gives one a completely wrong impression of the subject, but it's helpful anyway.

How about penguins? Think of a penguin. We can't understand what a penguin is without knowing about the existence of the ocean, and sandy beaches and fish and so on. But this requires a complex reality created out of a very large number of observations. So penguins are largely classical creatures. A penguin Bob either exists, or does not exist. Quantum penguins on the other hand, like quantum black holes, operate according to a much more Adamsian logic.

All the best
Kea

 

[Kea]

...

These prejudices are so invasive that they pervade even the best work in LQG. Picture a Black-Holes-Generate-Baby-Universes scenario...always described from the viewpoint of a metametaobserver, which the theory says cannot possibly exist!