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Kekeedme
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- TL;DR Summary
- I am trying to understand a method for determining the eigenvectors of 2-state system as explained in Cohen-Tannoudji. I am having trouble with a step he seems to have skipped
In Cohen-Tannoudji page 423, they try to teach a method that allows to find the eigenvectors of a 2-state system in a less cumbersome way. I understand the steps, up to the part where they go from equation (20) to (21). I understand that (20) it automatically leads to (21). Can someone please enlighten me about this step please?