For H = γH0 + V with spectral gap η and bounded V, the eternal leakage between coarse-grained spectral components is bounded by (1 - 4π∥V∥/(γη))^{-1/2} - 1.
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Robust quantification of spectral transitions in perturbed quantum systems
For H = γH0 + V with spectral gap η and bounded V, the eternal leakage between coarse-grained spectral components is bounded by (1 - 4π∥V∥/(γη))^{-1/2} - 1.