Recent content by mgelfan

When one side, say A, records a detection event, then this affects the sample space at B, limiting it to a certain coincidence interval surrounding the detection at A. The size of the interval is determined by a number of factors including the distances of A and B from the emitter, the type of...

The entanglement "effect" is instantaneous because wrt quantum theory it's evolving in an imaginary space. You're considering global changes (the joint measurement of events at A and B) -- so if something at either A or B is changed, then the global situation is changed ... instantaneously...

MWI interpretation is speculative. Considerations of it can be wonderful exercises :rolleyes: -- and if one does these exercises well enough one might even make some money (or a career :rolleyes:) from doing these exercises. But for most of us I should think that worrying about all the...

Quantum leaps are instantaneous. They happen in a mathematical model, not necessarily in real time and space. Quantum states (in the defacto standard interpretation of the theory) are not real states. It should also be noted that the geometrical (spacetime) interpretation of relativity theory...

Quantum measurements aren't at odds with objective reality. A quantum realm, where photons, electrons, etc. exist as individual objects, is at odds with the reality our sensory experience. So, photons, electrons, etc. exist as sets of mathematical and experimental operations. Theorists and...

Regarding the quantum system(s) that the physicist above is talking about -- this is not altogether unlike the way the different parts of a single chair occupy many different locations simultaneously. It can be said matter of factly that the chair is in many different places at once. What...

Maybe you're right. Here's my take on it. Violations of Bell inequalities would imply nonlocality (the kind that would conflict with special relativity) if (and only if) the locality condition employed in whatever representation is being used is actually a locality condition. It usually boils...

You don't have to ... because quantum theory (in its design and application) doesn't involve describing how our world actually works (whatever that might mean). There can be action-at-a-distance (quantum nonlocality) in quantum mechanics because the evolutions and transitions described by the...

In order to observe (to use the term somewhat loosely) whatever it is that's transmitted through slit 1, then something has to interact with it. The net effect of this is that whatever it is that was originally transmitted through slit 1 is either completely blocked or altered to the extent...

The transition from one physical state to another, different, physical state can't be instantaneous. Such transitions involve changes in the positions of the objects comprising the physical state(s). There is some time interval associated with any measurement operation. However, if we're...

Wavefunction collapse is, as you point out, instantaneous. It can be instantaneous because it's not something that is, as far as can ever be known, happening in reality. It happens in the imaginary space of quantum evolutions. We can't exploit this action-at-a-distance in the real world of...

I don't think that the state of the matter (regarding your question) is undecided. Or, if it is, it doesn't need to be. Wavefunction collapse is, by definition, instantaneous and nonphysical. It occurs in the unitary space where quantum states evolve, not in the 3D space where empirical...

Isn't this one of those questions that the principles of quantum theory assure can never be answered ... no matter how one interprets the reality of the wavefuntion?

Interesting discussion ... sort of. MWI is a most unattractive way of, er, looking at things. It certainly doesn't explain any of the stuff that it purports to explain. It seems to be saying that since the quantum processes involved in the generation of experimental observations (data) are...

The events at A and B can be (causally) independent of each other, while the statistics (paired detection attributes) accumulated at A and B aren't independent of each other. The problem of constructing a general lhv model which has a viable locality condition still hasn't been solved...