Demystifier's latest activity
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Demystifier replied to the thread I Bloch Sphere generalization for more than one qubit.You might be interested in this book... -
Demystifier replied to the thread I Does action at a distance violate any conservation principles?.But on the other hand, the quantum potential in Bohmian mechanics is neither time-translation nor space-translation invariant, so one...
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Demystifier replied to the thread I Does action at a distance violate any conservation principles?.For intuition, compare it with Newtonian gravity. It also involves nonlocal instantaneous action at a distance. Does it violate...
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Demystifier reacted to PeterDonis's post in the thread I Does action at a distance violate any conservation principles? with
Agree.
But such influences are not directly observable. All directly observable results are in accordance with standard QM. Standard QM obeys... -
Do you mean importance or impotence?
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Demystifier reacted to JimWhoKnew's post in the thread A Eigenstates of the Klein Gordon Field Operator with
Like.
The referenced derivation (stackexchange) uses the continuum expansion, but relies on the discrete commutation relations... -
Demystifier reacted to JimWhoKnew's post in the thread A Eigenstates of the Klein Gordon Field Operator with Like.
Welcome to PF (I should have written it in #2). ##a+a^\dagger## is proportional to ##\hat X## , so the eigenstates are just...
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Demystifier reacted to ergospherical's post in the thread I A sufficient condition for integrability of equation ##\nabla g=0## with
Informative.
Your connection ##\Gamma^{c}_{ab} = {e^c}_{I} \partial_a {e_b}^{I}## is the teleparallel/Weitzenböck connection (see e.g. this Wikipedia... -
Demystifier reacted to JimWhoKnew's post in the thread A Eigenstates of the Klein Gordon Field Operator with Like.
As a start, you can try working out a simpler case: For a 1D harmonic oscillator, what are the eigenstates of ##a+a^\dagger## ?
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Demystifier replied to the thread I Emission probability in blackbody spectrum derivation.No, ##p## is not probability density. It's just the probability that emission happened.
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Demystifier replied to the thread A A global energy conservation law in general relativity.By first fixing coordinates. For example, if you need to define conserved energy-momentum of gravitational waves, then you work with...
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Demystifier reacted to PeroK's post in the thread I Can entanglement swapping be explained without nonlocal influences? with
Haha.
I think I've only ever understood about two or three of Fra's posts! -
Demystifier replied to the thread A A global energy conservation law in general relativity.Of course there is, it is well known that one can construct an energy-momentum pseudo-tensor that leads to a globally conserved notion...
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Demystifier reacted to PeterDonis's post in the thread A A global energy conservation law in general relativity with Like.
You should resist the temptation. All you have done is rediscover the Komar energy. Which is a perfectly good integral conserved...
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Demystifier reacted to div_grad's post in the thread I Example of complete set of operators with Like.
The correct statement is that the phase space of a system with ##s=3## degrees of freedom is ##2s=6## dimensional. A simple pendulum...