Homework SolutionQuantum Operators: Pr Y & Pr^2 Y

In summary, quantum operators are mathematical tools used in quantum mechanics to represent physical observables and are often used in homework solutions to solve problems and calculate expected values. They relate to homework solutions by being an essential component in solving problems and determining probabilities. Pr Y, or the projection operator, is used to determine the probability of a quantum state collapsing to a particular eigenstate, while Pr^2 Y, or the probability operator, is used to calculate the probability of obtaining a specific measurement result in repeated measurements. In homework solutions, quantum operators are applied to the given quantum state and used in conjunction with mathematical techniques to find the solution.
  • #1
Chronos000
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Homework Statement



I'm given the expression for the operator Pr Y

Pr Y= -ih(bar) (1/r) d/dr (r Y)

I want to find Pr^2 Y so I have dotted Pr with Pr

I expect to get:

-h(bar)^2 (1/r) d/dr [ Y(Y + r dY/dr)]

but my notes have omitted the first Y in the above bracket and I can't see why.
 
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  • #2
there's nothing wrong with the answer, the Y shouldn't be there. Pr^2 Y means operating Pr on Pr Y
 
  • #3
so it is! thanks
 

FAQ: Homework SolutionQuantum Operators: Pr Y & Pr^2 Y

What are quantum operators?

Quantum operators are mathematical tools used in quantum mechanics to represent physical observables, such as position, momentum, and energy. They act on quantum states to give the corresponding value of the observable.

How do quantum operators relate to homework solutions?

Homework solutions in quantum mechanics often involve the use of quantum operators to solve problems and calculate the expected values of physical observables.

What is the meaning of Pr Y in quantum operators?

Pr Y, also known as the projection operator, is used to determine the probability of a quantum state collapsing to a particular eigenstate of the observable Y when a measurement is made.

What does Pr^2 Y represent in quantum operators?

Pr^2 Y, also known as the probability operator, is used to calculate the probability of obtaining a particular measurement result for the observable Y in a series of repeated measurements.

How do you use quantum operators in homework solutions?

In homework solutions, quantum operators are used to solve problems and calculate the expected values of physical observables. This involves applying the operator to the given quantum state and using mathematical techniques to find the solution.

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