flippiefanus's latest activity

OK so it depends on what state you have. The expectation value of ##a## for a single Fock state is zero. But you get a nonzero value...

Why do you say this experiment can be analysed in flat spacetime? Earth's gravity does not represent flat spacetime.

The Wikipedia statement probably intended to explain how the one-particle Hilbert space is used as a basic element to build up multiple...

Then we are in agreement. Personally I also prefer to work on phase space, but one needs to work through the basics to have a good...

Yes, I agree that off-diagonal terms carry the phase information, but not in the Fock basis. One needs a basis involving the other...

That quote is also significant for what it does not say: it does not say that one cannot use quantum theory for such scenarios.

No, go back and look at #7, #9 and #16 again. It is not a strawman.

OK but what is the reason why we want such a probability interpretation? It is not used in classical theory where we measure intensity...

True, I've expressed myself poorly. Let me clarify. If ##|\psi\rangle## and ##|\phi\rangle## are single photon states, then we can have...

No that is not the case. See #7, #9, and #16 for example. Those are the replies that I started making comments to.

A laser produces a multi-photon state. Not sure what you were trying to say here. The state of two lasers that are coupled cannot be...

At least two mass eigenstates of the cosmological remnant neutrinos should already be non relativistic due to the expansion of the...

One needs to have some force that can affect neutrinos to slow them down. (Gravity also affects them but that is not a force.) The only...

For what it is worth, much of the discussion that appear in the literature on this topic can be better understood by looking at the...

This is going to become a bit technical. If something is not clear, please let me know. All fields in quantum field theory are...