When we are calculating the fermi energy, we say that each energy level is 2 fold degenerate and the fermions stack up into higher and higher energy level due to the Pauli Exclusion Principle. My question is: The Pauli Exclusion principle only says that we can't put different fermions into the same eigenstate, so if we have fermions which are in states of a superposition of different eigenstates with different quantum amplitudes, the fermions do not have to go to higher energy levels because it doesn't contradict the Pauli Exclusion principle anymore?(adsbygoogle = window.adsbygoogle || []).push({});

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# A question on Fermi free gas model

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