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Old Oct 12th 2016, 11:41 AM   #1
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Does QM contradict relativity?

I understand Einstein believed that no information could travel between two points at greater than the speed of light.

However we know from QM entanglement that quantum attributes, not determined by hidden local variables, of spatially separated entangled twin particles have attributes that seem to be decided "on the fly" once one of the particles is measured; Also the particles always seem to be determined to have opposite values at the time of measurement and not a short time later after by which a light pulse being sent by one particle might arrive at the other.

I know they say that there is a problem unifying gravity with QM but doesn't this also show there is a problem unifying even special relativity with QM? Does QM insist that "entanglement information" be allowed to travel faster than light?

Last edited by kiwiheretic; Oct 12th 2016 at 11:43 AM. Reason: Change title
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Old Oct 12th 2016, 03:34 PM   #2
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Originally Posted by kiwiheretic View Post
I understand Einstein believed that no information could travel between two points at greater than the speed of light.

However we know from QM entanglement that quantum attributes, not determined by hidden local variables, of spatially separated entangled twin particles have attributes that seem to be decided "on the fly" once one of the particles is measured; Also the particles always seem to be determined to have opposite values at the time of measurement and not a short time later after by which a light pulse being sent by one particle might arrive at the other.

I know they say that there is a problem unifying gravity with QM but doesn't this also show there is a problem unifying even special relativity with QM? Does QM insist that "entanglement information" be allowed to travel faster than light?
The Metaphysics here is beyond me. However I can say this: GR is a Classical theory...it is not expected to be correct on the quantum level.

SR and QM come together in QFT, but I have no idea about transfer of information in such theories.

-Dan
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Old Oct 12th 2016, 04:00 PM   #3
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Originally Posted by topsquark View Post
The Metaphysics here is beyond me. However I can say this: GR is a Classical theory...it is not expected to be correct on the quantum level.

SR and QM come together in QFT, but I have no idea about transfer of information in such theories.

-Dan
I believe Susskind's latest thinking is that entanglement means a Einstein-Rosen bridge between the particles that are entangled.

https://en.wikipedia.org/wiki/ER%3DEPR
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Old Oct 12th 2016, 06:11 PM   #4
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Originally Posted by Romsek View Post
I believe Susskind's latest thinking is that entanglement means a Einstein-Rosen bridge between the particles that are entangled.

https://en.wikipedia.org/wiki/ER%3DEPR
Have or any of these ER worm holes (or characteristics thereof) been observed in the laboratory or is this purely conjecture?
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Old Oct 12th 2016, 07:25 PM   #5
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Originally Posted by kiwiheretic View Post
Have or any of these ER worm holes (or characteristics thereof) been observed in the laboratory or is this purely conjecture?
total conjecture with a mathematical model behind it.



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