In all my books the singlet and triplet state of a two-electron system seem to be postulated as obvious. The problem is that the sollutions somehow aren't obvious to me at all. I can see i can derive the s=1 states by applying a lowering operator to |s=1,m=1> =|++> But it doesn't help me in my understanding of the matter.(adsbygoogle = window.adsbygoogle || []).push({});

Also, i can see that the singlet state is orthogonal to the other states, but this doesn't help me get to it myself.

What is the thing i'm missing here?

For completeness:

singlet:

[tex]|s=0,m=0> = \frac {1} {\sqrt{2}}(|+-> - |-+>)[/tex]

Triplet:

[tex]|s=1,m=1> = |++>[/tex]

[tex]|s=1,m=0> = \frac {1} {\sqrt{2}}(|+-> + |-+>)[/tex]

[tex]|s=1,m=-1> = |-->[/tex]

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# How do i get the singlet state?

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