partialBak - particle with that definite value of x(or p or...

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1 of 1 Quantum Mechanics is fundamentally a probabilistic theory. This indeterminacy was deeply disturbing to some of the founders of quantum mechanics. Einstein and Schodinger were never happy with this postulate. Einstein was particularly unhappy and never accepted QM as The act of measuring the position changes the wavefunction according to postulate 4: Postulate 4: If a measurement of position (or any observable property such as momentum or energy) is made on a system, and the result x (or p or E) is found, then the wavefunction changes instantly, discontinuously, to be a wavefunction describing a
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Unformatted text preview: particle with that definite value of x (or p or E). We say that the wavefunction collapses to the eigenfunction corresponding to the eigenvalue x. If you make a measurement of position, and find the value x o , then immediately after the measurement is made, the wavefunction will be sharply peaked about that value, like so: Actually, the graph on the right should have a much taller peak because the area under the graph on the right. 2/27/2012 © University of Colorado, Michael Dubson | Ψ | 2 x x | Ψ | 2 x o Before measurement After measurement...
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This note was uploaded on 02/27/2012 for the course PHYSICS 3220 taught by Professor Stevepollock during the Fall '08 term at Colorado.

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