How to Determine Energy Probabilities in an Infinite Potential Well?

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SUMMARY

The discussion focuses on determining energy probabilities for a particle in an infinite potential well, specifically using the wave function Φ(x) = Nx(a-x). The key equation referenced is 1 = |cn|^2 = |<Φn|Ψ>|^2, which relates to the normalization of the wave function. The user attempts to calculate the expansion coefficient using the eigenfunction Ψn(x) = sqrt(2/a)sin(n*(pi)*x/a) but questions the correctness of their approach. The normalization constant N is crucial for ensuring the wave function is properly normalized.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly wave functions.
  • Familiarity with the concept of normalization in quantum mechanics.
  • Knowledge of eigenfunctions and their role in quantum systems.
  • Ability to perform integration of functions, especially in the context of probability amplitudes.
NEXT STEPS
  • Study the normalization conditions for wave functions in quantum mechanics.
  • Learn about the calculation of expansion coefficients in quantum states.
  • Explore the implications of the infinite potential well model in quantum mechanics.
  • Investigate the properties of eigenfunctions and their applications in quantum systems.
USEFUL FOR

Students and educators in quantum mechanics, particularly those focusing on wave functions and energy measurements in potential wells.

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Homework Statement



The wave function for a particle in a infinitely deep potential well is at some point in time Φ(x) = Nx(a-x). In which probability gives the energy measurment a another value than E1 ,etc ground state

Homework Equations



1 = |cn|^2 = |<Φn|Ψ>|^2 (1)

The Attempt at a Solution


[/B]
If Ψn(x) = sqrt(2/a)sin(n*(pi)*x/a) be the eigenfunction and put it into (1) and integrate. Is this right method I am doing ?
 
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What are you asked to do in this problem? Initially I supposed you have to calculate the expansion coefficient, but equation (1) indicate that it's equal to unity (which is not correct either). Is it the N in ##\Phi(x)## that is asked? In that case simply use the requirement of normalization.
 

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