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Given a viably physical, quantum many body Hamiltonian of a isolated system, if initially a state is prepared which is a superposition of energy eigenstates in an interval centered at E and E', not at the edges of the spectrum, does such a state ever thermalize in any sense, given a strictly unitary evolution occurs? Thanks!

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  • $\begingroup$ You might want to revisit what "unitary evolution" means $\endgroup$ Commented Apr 17 at 14:59

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