I have seen discussion about it here but it is still not clear to me whether probability is square of probability amplitude or is it product of amplitude with it's complex conjugate.(adsbygoogle = window.adsbygoogle || []).push({});

I looked in HyperPhysics http://hyperphysics.phy-astr.gsu.edu/Hbase/quantum/qm.html#c5" and it says it's product with complex conjugate but I'm still not sure.

Because square and product with complex conjugate give different results.

(a+ib)^2=a^2-b^2+2iab

but (a+ib)(a-ib)=a^2+b^2

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# Probability is square of amplitude or it's product with complex conjugate?

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