Answer by Marco Ocram for 1D Infinite Square Well: Box Suddenly Increases in...
The probability that a measurement made on a particle will yield the ground state energy is proportional to the overlap between the initial wave function and the ground state eigenfunction. So you just...
View ArticleAnswer by d_b for 1D Infinite Square Well: Box Suddenly Increases in Size....
It seems like the thing you are missing is a very basic ingredient of quantum mechanics -- the Born rule. When we make a measurement of some observable $A$, we will find that $A$ takes values in the...
View ArticleAnswer by Eric Angle for 1D Infinite Square Well: Box Suddenly Increases in...
I would forget about the movement of the wall. The potential is the infinite square well of width $2L$ (potential is $\infty$ aside from the region $0 < x < 2L$, where it is $0$), and the...
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Answer by Ruslan for 1D Infinite Square Well: Box Suddenly Increases in Size....
...it makes no sense to calculate any property of the particle with the "initial" wave-function, since this is simply the incorrect wave-function for the new well?The wavefunction can't be "incorrect...
View Article1D Infinite Square Well: Box Suddenly Increases in Size. How treat this?
I am currently working my way through John S. Townsend book "A Fundamental Approach to Modern Physics" (ISBN: 978-1-891389-62-7). Exercise 3.12 (p.111) is about the 1D infinite square well. The box has...
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