Abstract
The authors study spectral correlations in the many-body-localized phase by computing the spectral form factor for which they obtain an expression and postulate the presence of a universal power-law scaling regime.
Highlights
We theoretically study correlations present deep in the spectrum of many-body-localized systems
In this Letter, we have derived an exact expression for the spectral form factor of Poisson levels and identified a universal regime
We have shown that this describes the spectral form factor (SFF) in the many body localized phase well through a detailed comparison with numerical results on two separate physical models
Summary
We theoretically study correlations present deep in the spectrum of many-body-localized systems. Is the bandwidth of the selected eigenvalues with mean level spacing μ, the early τ behavior (τ is largely determined by the Poisson density of states (DOS) [33] which is
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