The conjecture that the postquench ground state always has the largest overlap with the initial ground state for same-phase quenches is disproved by an explicit gapped free-fermion counterexample.
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Comment on "Extension of the adiabatic theorem"
The conjecture that the postquench ground state always has the largest overlap with the initial ground state for same-phase quenches is disproved by an explicit gapped free-fermion counterexample.