Matterwave's latest activity

Not every calculation is physically meaningful. Consider that a light ray emitted from earth at the same time that the spaceship...

I know a decent number of properties of SO(3) and obviously I can visualize the group action on three space as rotations. But a good...

How?

Good point. You're right that the step ## A = Q \Lambda Q^T ## requires additional assumptions and does not hold for a completely...

This will be the case only when your ##H## is symmetric (assuming it's real). It's true for the Hessian since mixed partials commute...

Could you write this out in mathematics / symbols? I'm not sure I am able to parse this into a known thing. One thing your posts...

Fair enough. For charge density and similar field theories, first derivatives certainly play a direct physical role, so my statement was...

Honestly, I don't know. Maybe something like principal axes/directions of curvature (of x,y,z field)? When I think second derivatives...

Could you give some examples? I'm having a hard time seeing your post as anything more than writing out some mathematical facts. Like...

I will try to keep my response as narrow as possible to avoid saying wrong things. You mean post measurement of A right? By postulate...

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

In standard QM, once A is measured to emerge from the V polarization port then B will be in state ##|V\rangle##, but I think you know...

Hello. I understand that A and B entangle so that they have same |X>. Alice observes |X>. She anticipates that Bob should observe |X>...

A new thread has been started by @Demystifier on the topic of how BM accounts for entanglement swapping experiments. The new thread is...

Yes: it adds the actual position and velocity of each particle. But it also changes how the wave function, which is also present in...