PS217-18-7.pdf - Physics 217 Problem Set 7 Due Fri October...

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Physics 217 Problem Set 7 Due: Fri, October 26th, 2018 Consider a particle in the ground state of an infinite well of width a , ψ ( x ) = q 2 a cos( πx/a ) ( - a/ 2 < x < a/ 2) = 0 ( x < - a/ 2 , x > a/ 2) At time t = 0 we suddenly take away the “walls” of the well, setting V ( x ) = 0 everywhere. The state is still ψ ( x ), but it is now appropriate to write this state as a superposition of plane waves, ψ
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  • Uncertainty Principle

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