- #31
Ben vdP
- 25
- 5
The most entangled might (in general) be the problem description.
Maybe in first order:
Step 1, suppose there is a process in which two quantum particles are created that move away in opposite directions with opposite spins due to conservation laws.
Here we are talking about two specific instances of quantum particles that are correlated.
In the second step there is time evolution with schrodinger equation or other method, wave function, interaction with other quantum particles or fields and all put together as a "state". This leads to probabilities that can be calculated.
And probabilities lead to statistics and ensembles, although there can be an interpretation dependency.
But at this step it is no longer the same system being described as in step 1, it is now a broader system than "two specific instances of quantum particles that are correlated".
Only at the third step there are measurements made with macro world outcomes and how this affects the quantum system or it is yet another qsystem. Now there is interaction between the quantum particles under investigation with measuring devices. That leads to additional disturbances of the "states". At this step the opinions might be diverging the most on for example what that "state" actually is that you are measuring or what the wave function stands for.
Maybe a minor note, but if a measurement is made and that results into a "state" outcome then there is still limited knowledge of the "state" just before the measurement.
Maybe in first order:
Step 1, suppose there is a process in which two quantum particles are created that move away in opposite directions with opposite spins due to conservation laws.
Here we are talking about two specific instances of quantum particles that are correlated.
In the second step there is time evolution with schrodinger equation or other method, wave function, interaction with other quantum particles or fields and all put together as a "state". This leads to probabilities that can be calculated.
And probabilities lead to statistics and ensembles, although there can be an interpretation dependency.
But at this step it is no longer the same system being described as in step 1, it is now a broader system than "two specific instances of quantum particles that are correlated".
Only at the third step there are measurements made with macro world outcomes and how this affects the quantum system or it is yet another qsystem. Now there is interaction between the quantum particles under investigation with measuring devices. That leads to additional disturbances of the "states". At this step the opinions might be diverging the most on for example what that "state" actually is that you are measuring or what the wave function stands for.
Maybe a minor note, but if a measurement is made and that results into a "state" outcome then there is still limited knowledge of the "state" just before the measurement.