PeterDonis's latest activity

Of course. But that doesn't mean the mathematical objects are reality. Nor does it mean that the mapping in question has to be simple...

If your only requirement to call something a "one-particle state" is that it's an eigenstate of the number operator @Matterwave wrote...

Unfortunately, as I said, such a state, if it's obtained by applying the field operator you wrote down to the vacuum, doesn't look...

No, you don't, you get a superposition of a continuous infinity of different single particle states with different momenta, because of...

What restrictions are there on the dynamics in the actual theoretical model under discussion that would ensure that they are...

Everything in a theory of physics is mathematical objects. I'm not describing any particular reading of QFT. I'm just pointing out that...

I would say QFT also treats waves as derived--they're coherent states, just as particles are Fock states. The fundamental entities in...

But you're claiming more than that: Ok so far, but... ...this is an additional claim which, as I've already said, is not implied by...

From where?

Quantum fields aren't waves, they're operators. So I don't think "fields as fundamental" is the same thing as "wave-realist".

Neither of them are valid references here. Can you find a reference that is valid? Like, say, a textbook on calculus that gives a...

How do you know?

A reference to an actual published peer-reviewed paper would be much better than someone's comment on a blog post. Even well-known...

It doesn't. The term "many worlds" is really a misnomer. The MWI is just unitary evolution, all the time, nothing else, and unitary...

By Penrose interpretation do you mean the Penrose-Diosi model where gravity causes collapse? That one should actually make some...