http://bec.science.unitn.it/infm-bec/papers/preprints/becenc.pdf(adsbygoogle = window.adsbygoogle || []).push({});

It's in regards to expression (4)

I don't understand why the eigenvectors and eigenvalues of this operator happen to be the single particle eigenstates and the occupation numbers as they mention just below this expression.

I do understand that in general a hermitian operator can be written like this in terms of its eigenfunctions and eigenvalues - I just don't understand how to identify these eigenfunctions as the single particle eigenstates.

By single particle eigenstates I understand them being the eigenstates of the Hamiltonian for a single particle.

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# BEC paper question

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