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- W2511556711 abstract "We study the ergodic properties of excited states in a model of interacting fermions in quasi-one-dimensional chains subjected to a random vector potential. In the noninteracting limit, we show that arbitrarily small values of this complex off-diagonal disorder trigger localization for the whole spectrum; the divergence of the localization length in the single-particle basis is characterized by a critical exponent $nu$ which depends on the energy density being investigated. When short-range interactions are included, the localization is lost, and the system is ergodic regardless of the magnitude of disorder in finite chains. Our numerical results suggest a delocalization scheme for arbitrary small values of interactions. This finding indicates that the standard scenario of the many-body localization cannot be obtained in a model with random gauge fields." @default.
- W2511556711 created "2016-09-16" @default.
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- W2511556711 date "2016-11-11" @default.
- W2511556711 modified "2023-10-13" @default.
- W2511556711 title "Many-body delocalization with random vector potentials" @default.
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- W2511556711 doi "https://doi.org/10.1103/physreva.94.053610" @default.
- W2511556711 hasPublicationYear "2016" @default.
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