PeterDonis's latest activity

Not in QM, no. Even that's not quite a direct observable; it gives you the probability amplitude, but all you can actually observe is...

@TheHutch you seem to be trying to model all possible states of light in terms of "photons". Unfortunately, that's not a workable...

You're misunderstanding the role the paths play in QM. In QM, all of the paths are included in the machinery that determines the...

Are you familiar with the path integral formulation of QM? That is the formulation that uses these paths and explains why.

Yes, that's because QM is not a classical theory. GR is a classical theory. Since, as you note, QM includes non-stationary paths...

This is the QM forum, not the relativity forum. If you are asking, what would it mean in the context of quantum field theory in curved...

Why do you think this is the case?

If you mean they usually move away from the source in different directions, yes, that's a common feature of such experiments. I'm not...

What do you mean by "complete physical disconnection", and why do you think "distinguishability and spatial separation" would...

That is incorrect. Also, the experiment shown is not the double slit with single photons, but a double slit experiment done with a light...

You can't outrun a light ray that's moving in the same direction as you are. That's not a matter of who is "seeing" it; it's an...

How are you going to post-select that subensemble of runs?

To be clear, I do not think the type of post-selection used in the DCSE experiment is cherry-picking. I agree with @DrChinese that it's...

No. Again, you are assuming that getting a pair of photons out implies that the electron-positron pair was in the singlet state going...

I would say that the swap operation implies the A/D entanglement. The difference is that "implication" is logical rather than physical...