Could QM Arise From Wilson's Ideas

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In summary, Sean Carroll's article states that the most naive way to quantize general relativity leads to something that is non-renormalizable. However, on Earth, we have an effective field theory that can be used to calculate processes at low energies.
  • #106
*now* said:
I think CH treats time differently, as I think other views can treat it in different ways.

It treats time the same as the formalism everyone agrees on does. If you want to learn about CH, see:
https://quantum.phys.cmu.edu/CHS/histories.html

Thanks
Bill
 
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  • #107
Yes, it just occurred to me to edit to correct myself, thank you, I was referring to the discussion of the arrow of time from the earlier DH paper linked, and how different views might discuss the formalism, but I won’t edit for continuity.
 
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  • #108
bhobba said:
It is like solipsism. I can't prove it wrong. However, personally, like most people, I believe it wrong. It simply does not sit well with the world as having an independent objective existence. In probability theory, we think of the outcomes we assign probabilities to as potentially real, and one becomes actually real. We do not think of all possible outcomes as actually real. It is just a convention - but one most people hold to.

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Bill

Would it not be more fair to say that DH is the solipsist standpoint here? I am conscious and all empirical evidence indicates that it is due to my brain, other people have similar brain structures and behave similarly, hence assuming their consciousness is logical. In this example don't you just choose to believe that somehow, someway, one world is real for no other reason than the fact that the others cannot be observed (like consciousness of others) ?
 
  • #109
Quantumental said:
In this example don't you just choose to believe that somehow, someway, one world is real for no other reason than the fact that the others cannot be observed (like consciousness of others) ?
Sure. But it is what most people do. Other than realising other views are possible, and virtually everyone rejects them, it really doesn't matter. If it worries you, I think a philosophy forum is more suitable than here.

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Bill
 
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  • #110
bhobba said:
Sure. But it is what most people do. Other than realising other views are possible, and virtually everyone rejects them, it really doesn't matter. If it worries you, I think a philosophy forum is more suitable than here.

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Bill

No, I was just curious if there was any logic in the interpretation of DH that lent itself to a one world view beyond denial. Everyone is entitled to their own beliefs of course :)
 
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  • #111
Interested_observer said:
Einstein was right. QM is useful, but it is not complete.
I'd say, if it is incomplete, people would have found the missing (global) hidden variables by now. Again, the problem with QM is how to interpret QM to match our intuition.
 
  • #112
yjjiang said:
I'd say, if it is incomplete, people would have found the missing (global) hidden variables by now. Again, the problem with QM is how to interpret QM to match our intuition.

The modern proposed incompleteness is below, say the Plank Scale, another, possibly non-quantum, theory takes over.

Thanks
Bill
 
  • #113
yjjiang said:
I'd say, if it is incomplete, people would have found the missing (global) hidden variables by now. Again, the problem with QM is how to interpret QM to match our intuition.

That's not necessarily true. It could be that there is some theory ##QM+## whose differences with ordinary ##QM## are completely negligible when the number of interacting particles is small but become important when there are, say, ##10^{10}## or more interacting particles. It would be very difficult to empirically test the difference, because we can't actually analytically study systems of many particles without making approximations.
 
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  • #115
stevendaryl said:
That's not necessarily true. It could be that there is some theory ##QM+## whose differences with ordinary ##QM## are completely negligible when the number of interacting particles is small but become important when there are, say, ##10^{10}## or more interacting particles. It would be very difficult to empirically test the difference, because we can't actually analytically study systems of many particles without making approximations.
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End date 30 April 2027

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  • #116
I have a question but i am not sure that it is relevant here.
consider something like the Ads/Cft equivalence but where we have a 3+1 quantum theory equivalent to a holographic 2+1 quantum theory (x,y,t)
suppose that we have a measurement of z in the 3+1 space time.
what about the reality of the z result?
 

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