Normalization constant.

AI Thread Summary
To find the normalization constant for the ground state harmonic oscillator wave function, the integral of the squared wave function must equal one. The wave function is given as ψ₀(x) = A e^{-ax²}, leading to the equation A² ∫ e^{-2ax²} dx = 1. The user is struggling with the integration process and is considering using integration by parts or consulting an integral table for assistance. They also need to determine the normalization for the first excited state. Seeking clarity and a straightforward solution is essential for their understanding.
theCandyman
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I have been trying to figure out how to find the normalization constant for the ground state harmonic oscillator wave function. So:

\int_{-\infty}^{\infty} {\psi_0}^2 (x) = 1

{\psi_0}^2 (x) = A^2 e^{-2ax^2}

\int_{-\infty}^{\infty}A^2 e^{-2ax^2} = 1

A^2 \int_{-\infty}^{\infty}e^{-2ax^2} = 1 (Can I do this? I thought A to be a constant.)

Now when I try to integrate, I end up having trouble. I also have to do the first excited state as well and found someone else who asked for help with a similar problem (https://www.physicsforums.com/showthread.php?t=51706), but I want an answer that I can understand. Does anyone think I should just try going through the integration by parts and looking for an integral table to find the answer for both of these?
 
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Both of the integrals you will need are in an integral table.
 
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