Hello,
I don't understand why the solution for the density matrix AB is as such :
Why are the cos² not cos²/2 ? How do we get a factor 2 to multiply them ?
You are right. Its a typo. The 1/2 should be there.
Then it contributes to correctly normalise 1/2 the beta state last line.
Then it contributes to correctly normalise 1/2 the beta state last line.
Alright, thanks a lot.
