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• W2606470147 abstract "We show that a simple artificial neural network trained on entanglement spectra of individual states of a many-body quantum system can be used to determine the transition between a many-body localized and a thermalizing regime. Specifically, we study the Heisenberg spin-1/2 chain in a random external field. We employ a multilayer perceptron with a single hidden layer, which is trained on labeled entanglement spectra pertaining to the fully localized and fully thermal regimes. We then apply this network to classify spectra belonging to states in the transition region. For training, we use a cost function that contains, in addition to the usual error and regularization parts, a term that favors a confident classification of the transition region states. The resulting phase diagram is in good agreement with the one obtained by more conventional methods and can be computed for small systems. In particular, the neural network outperforms conventional methods in classifying individual eigenstates pertaining to a single disorder realization. It allows us to map out the structure of these eigenstates across the transition with spatial resolution. Furthermore, we analyze the network operation using the dreaming technique to show that the neural network correctly learns by itself the power-law structure of the entanglement spectra in the many-body localized regime." @default.
• W2606470147 created "2017-04-28" @default.
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• W2606470147 date "2017-06-26" @default.
• W2606470147 modified "2023-10-18" @default.
• W2606470147 title "Probing many-body localization with neural networks" @default.
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• W2606470147 doi "https://doi.org/10.1103/physrevb.95.245134" @default.
• W2606470147 hasPublicationYear "2017" @default.
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