PeterDonis's latest activity
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PeterDonis replied to the thread A Dirac's integral for the energy-momentum of the gravitational field.It's certainly obvious to me, and it seems like it was obvious to MTW when they wrote their textbook. :wink: With Dirac it's often hard... -
PeterDonis replied to the thread I Is there a bad intuition or bad explanation in quantum entanglement?.Ah, I see; you're really thinking in terms of QFT, not non-relativistic QM. In QFT the whole idea of the "state" of a system is...
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PeterDonis replied to the thread I Energy*time uncertainty for particle decay.The kind that's presented in introductory QM textbooks, like Griffiths. :wink: In other words, nothing "specialized", just the basics of...
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PeterDonis reacted to PeroK's post in the thread I Energy*time uncertainty for particle decay with
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You have to go for it and learn and study matter waves if that's what the book does. Matter waves were part of an early version of QM... -
PeterDonis replied to the thread I Question about discussions around quantum interpretations.Even this is interpretation dependent. In the MWI, for example, the unitary evolution of the state is completely deterministic, even...
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
Actually only the first half is part of the Copenhagen interpretation. The second half is not, since an integral part of the Copenhagen...
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
This is not part of the 7 rules - the part common to all interpretations. It is only part of the Copenhagen interpretation.
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
Rule 3 only states that the state of an isolated system evolves deterministically. It only follows that the state of open system only...
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
But mathematicians talk, e.g., about the probability with which a particular digit appears in the deterministic sequence of digits of...
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
In this case you'd quote (in words) a standard reference for the questionable 'only' part of this claim!
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
Then you should leave assessments of difficulty to them! Even tests of Bell inequality violations are hard to realize, in the sense that...
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PeterDonis reacted to Demystifier's post in the thread I Question about discussions around quantum interpretations with Like.
You mean a local hidden-variable theory cannot reproduce all of QM's predictions. A non-local hidden-variable theory can.
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
Yes. That's the part where interpretations differ. This is because standard QM ignores all preparation issues and detection issues...
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
Yes. The evolution of the radiated system in a homogeneous medium is generally assumed to be unitary, with an effective dynamics...
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PeterDonis reacted to A. Neumaier's post in the thread I Question about discussions around quantum interpretations with Like.
not be too difficult??? To hold up your claim, please propose how to set up such an experiment. Note that you need to make sure in...