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mike1000
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[Mentors' note: Split off from this thread as it was a digression there]
After you make a measurement and find the particle to be in a particular eigenstate, if you measure that particle again will you find it to be in that same eigenstate?
PeroK said:You have a quantum state before a measurement: the state is evolving with time. A measurement changes the quantum state (to an eigenstate of the observable being measured); the new quantum state continues to evolve.
To what extent you can ask what is happening at the "instant of measurement" is a moot point.
After you make a measurement and find the particle to be in a particular eigenstate, if you measure that particle again will you find it to be in that same eigenstate?
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