A. Given the exact locations of N electrons - can we find out the total wave function and the individual wave functions by some law of nature?(adsbygoogle = window.adsbygoogle || []).push({});

B. Given the exact total wave function - can we find out the coordinates of each electron and the indiviual wave function of each electron by some law of nature?

C. Given the exact indiviual electron wavefunction AND the exact location of N electrons - can we find out the total wavefunction by some law of nature?

....What is the total wavefunction representative of anyways???? The wavefunction of an individual electron named "Mr.X" when squared, gives us the probability density of finding "Mr. X" (please don't come here with other contesting interpretations, thats not what this question is about). BUT what is the implied meaning of the total wavefunction? whose probability density does it represent?? surely not all electrons, that doesnt make a meaningful quantity - "probability density of finding all electrons" - where????.

Also, can someone please direct me to a source where they explain how CI method can lead to an exact solution of SE in principle. I mean I cannot understand what the unoccupied states of a single electron system have got to do with occupied ground states of a N electron System

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# Decomposition of total Wavefunction for N electron problem

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