Double Measurement

[EquisDeXD]

So I have one particle in a state of superposition, and two observers measure it simultaneously (somehow), would they both observe the same location?

[Ronald Hyde]

So I have one particle in a state of superposition, and two observers measure it simultaneously (somehow), would they both observe the same location?

They're not allowed to both measure the state. Whichever one manages to measure it first destroys the information for the other.

[EquisDeXD]

So I guess they would both measure the same result since the location is a "function" of the probability wave?

[Ronald Hyde]

Well, they could both employ a 'third party' to perform the measurement, an instrument.

When the instrument makes the measurement an entropy change in the instrument will

occur and can be observed by both of our 'observers', but that is not the same as your

original question.

[swansont]

Once someone has done the measurement of a system in a superposition, the system will be in an eigenstate. Absent subsequent interactions, that same measurement has to yield the same result.

[EquisDeXD]

Once someone has done the measurement of a system in a superposition, the system will be in an eigenstate. Absent subsequent interactions, that same measurement has to yield the same result.

 

But what about relativity? What if the two are accelerating away from the atom at the same speed and started from the same position, but then to a stationary object it happens to appear a little to the left of the nucleus making a small difference in the actual distance between the people accelerating away?

[swansont]

But what about relativity? What if the two are accelerating away from the atom at the same speed and started from the same position, but then to a stationary object it happens to appear a little to the left of the nucleus making a small difference in the actual distance between the people accelerating away?

I don't understand the scenario you describe.

[EquisDeXD]

I don't understand the scenario you describe.

 

I'm essentially saying, what about relativity?

[swansont]

I'm essentially saying, what about relativity?

What about it? It's not going to change an eigenstate.