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IamSmooth

Fri Jan 03 2014, 02:12AM

Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
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I was watching this 1:20 hour youtube video that discussed quantum physics. It then suggested that our world is a holographic projection of a two-dimensional world. I have heard of this before. What I want to know is this something that is being accepted or is the jury still out?

Andy

Fri Jan 03 2014, 04:36AM

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I don't know about the jury, but I think that light travels at different speeds, which could account for the 2d effect, in empty space it might say travel 1000light years in a second. Just a thought.

Bjørn

Fri Jan 03 2014, 06:34AM

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After string theory failed to get anywhere the focus is shifting over to the holographic principle and trying to somehow join it with M-theory. As with string theory there is no known connection with reality, so many will label it "Not even wrong".

To get anywhere close to science there must be predictions about reality, as it stands it is just pure mathematics.

Dr. Slack

Fri Jan 03 2014, 07:39AM

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I don't think any body is trying to say that although this looks like an N-dimensional world, it *is* actually all happening on an n-1 dimensional surface.

What they are saying is that many known equations of state within a volume have a 1:1 correspondance with other known equations in one fewer dimensions on the surface of the volume.

Generally, faced with physics that isn't understood, scientists will watch for a while to try to spot repeated behaviour, and then to try to see if they've seen, or can recreate, that behaviour in mathematical equations. If they can, then it's often a very fruitful line of further enquiry to see how far the correspondence can be pushed. If the model can be shown to fit well, then some people will get ahead of themselves and say this is the way the world is. The more circumspect will say that if you do the sums *as if* the world is like this, then your sums will describe the behaviour that you see. Of course, if some elements of the model have apparent physical counterparts in the world we experience, the temptation to ascribe reality to, say, a particle, can become overwhelming.

Newton discovered that the world was a single inertial frame, at least for the low relative velocities he could achieve, and he was undoubtedly justified in saying the world *is* like this. Bent space and probablistic equations based on the phase of particle waves work brilliantly for the very big and the very small respectively, but as we know at least one to be incomplete, it's only in the lower reaches of the education system that anybody teaches this is how the world is. Similarly, when looking for prototypes for new models in different numbers of dimensions, strings, branes, holograms, it's only the lazy who will claim that as a reality.

But we are not going to find a replacement or super-suming theory for QM and GR by sitting on our butts, and interesting insights have often come from pursuing totally outlandish maths, so let's follow those correspondences and push them for all they're worth.

BigBad

Sat Jan 04 2014, 03:32AM

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It's not proven or disproven physics yet, but as an idea it may solve some issues wtih the current standard model.

One of the problems is the information problem; namely what happens to information that falls into a black hole? There's fairly good arguments now that it can get thoroughly scrambled but it can't just disapear, and if it formed itself into a new higher dimensional holographic universe operating on the surface of a black hole that might explain it.

Ash Small

Sat Jan 04 2014, 04:56AM

Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245

BigBad wrote ...

It's not proven or disproven physics yet, but as an idea it may solve some issues wtih the current standard model.

One of the problems is the information problem; namely what happens to information that falls into a black hole? There's fairly good arguments now that it can get thoroughly scrambled but it can't just disapear, and if it formed itself into a new higher dimensional holographic universe operating on the surface of a black hole that might explain it.

I did hear a theory somewhere that 'information' remains at the 'event horizon' of a black hole.....Maybe it was Hawking who said this, after he realised some of his earlier hypotheses were 'flawed'.

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