Recent content by jeffn1

Doesn't the Schrodinger equation apply to the electron like other quantum particles? We can only detect a location when when it is measured (but with the familiar tradeoff of location/momentum). So, we currently have "probabilities" (that, as I understand it, correspond to the shapes of...

Get AI on it! ;)

Forgive me if this is a dumb question, but in the case of a pair of entangled particles in a singlet state, if the spin of one entangled particle is measured (which causes them to disentangle, as I understand it), is the spin of the other particle always the opposite?

Yes, I meant entanglement ends. But, to my way of thinking, as a result of this the spins of the two formerly entangled particles are no longer correlated. I think I've resolved myself to accept nonlocality. QFT, based on (let's call them) infinite quantum fields is so well supported. I tend...

Yes, "cause" is an interesting concept; more slippery than one might initially think. In law there are two legal concepts "but for" causation and "proximate" causation. "But for" causation seems to be the relevant one for science. Proximate cause is used in tort law to say that something...

Ahh, that's a deeper question. I am not doing "actual physics", but I do want to understand science. Is it fair to say you are in the Niels Bohr school of thought? ;)

Thank you, Peter. Maybe the confusion stems from what we are defining as "the cause". I tend to think the detection/measurement/interaction of either particle causes both particles to dis-entangle. Is that helpful?

I think forget about the conveyor belt analogy (and thank you for thinking about it). I don't think it was very good because it is too removed and different from entangled particles. But, I suppose all I was trying to say was that, if the detection/measurement/merely stops any further...

Thank you! The conveyor belt analogy (I suspect others have created a better one) is that the pre-detection environment is "in flux". But, a detection performed at different points in time would result in different spins (so there is no predetermined hidden spin(s)). But, once the...

I didn't think Bell inequalities experiments ruled out nonlocal hidden variables. I thought Bohmian Mechanics is a nonlocal hidden variable interpretation.

I understand two particles can be entangled even though they are many millions of miles away. I understand a simple example of this is a "quantum singlet state": Singlet State: This is the precise quantum state where two entangled particles have a total spin of zero. Because the total spin...

If the act of measuring/detecting/collapsing either particle causes both particles to select opposing spins, I do not see why this should not be considered cause and effect. But I'll keep digging. :) FWIW, I think this is consistent with Art Hobson's view. I recall him stating that this occurs...

I'd love your thoughts on this topic (if we could move these few posts to the interpretation forum). Is there something in the scientific literature that contradicts the idea that the measurement of the local particle "causes" the local and non-local particle to resolve to a specific spin state...

I need to look into this more. My intuition would be that the entangled particles are in a state of flux before either is measured/detected/collapsed/branched off. Once either particle is measured, the state of flux "stops" for both particles. So, the measurement of either particle sort of...

But, Peter, if the nonlocal particle is measured before the the speed of light would allow a signal, don't the observed correlations strongly suggest that the measurement of the local particle affected the nonlocal particle faster than the speed of light? (I do want to note that I appreciate...