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- W4386435689 abstract "Many-body localization (MBL) of a disordered interacting boson system in one dimension is studied numerically at the filling faction one-half, in terms of level statistics, local compressibility, correlation function, and entanglement entropies. The von Neumann entanglement entropy is decomposed into a particle number entropy and a configuration entropy. The localization lengths are extracted from the two-body correlation function for the many-body-localized states and the corresponding time-evolved states as well. Since the eigenstate configuration entropy nears zero in the localized phase, the localization transition is dominated by the particle number entropy and its fluctuations, as shown by the finite-size analyses of the total entropy and the deviation of the particle number entropy from the ideal thermalization distribution. A dynamical phase diagram is established, consisting of an ergodic thermalized region and a many-body-localized region in a parameter space of the disorder strength and the energy density. These regions are separated by a many-body mobility edge deducible from both the extracted localization length and the entanglement entropy, which also appears consistent with that based on the level-spacing ratio. Starting from 2 particular inhomogeneous initial states, the slow quantum quench dynamics reveals the existence of 3 different localization regions. Their dynamical properties, including the growth behavior, the steady-state entropy scaling, and the emergent channel reflection symmetry, are systematically summarized and compared with the noninteracting Anderson localization. Within this scheme, the recent experimental observation [A. Lukin et al., Science 364, 256 (2019)] might be interpreted as corresponding to the scatter MBL of the trio." @default.
- W4386435689 created "2023-09-05" @default.
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- W4386435689 date "2021-04-17" @default.
- W4386435689 modified "2023-10-16" @default.
- W4386435689 title "Many-body localization transition in the disordered Bose-Hubbard chain" @default.
- W4386435689 doi "https://doi.org/10.48550/arxiv.2104.08582" @default.
- W4386435689 hasPublicationYear "2021" @default.
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