Many-body delocalization from embedded thermal inclusion

Abstract

We numerically study quantum avalanches in one-dimensional disordered spin systems by attaching two XXZ spin chains. One chain has low disorder representing a rare Griffith's region, or thermal inclusion, and the second has larger disorder, i.e., disorder larger than the observed finite-size crossover. Comparing dynamics of this system to identical systems with uniformly large disorder, we find evidence for exponentially slow thermalization (in disorder) within the many-body localized regime when the rare region is present. We observe a decay of the spin imbalance in the bulk of the large disorder region that persists to long times ($\sim 10^4$) and find a universal behavior of the spectral function.

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Cited by in corpus (16)

• Catching thermal avalanches in the disordered XXZ model
• Localization spectrum of a bath-coupled generalized Aubry-André model in the presence of interactions
• Statistics of systemwide correlations in the random-field XXZ chain: Importance of rare events in the many-body localized phase
• Many-body localization crossover is sharper in quasiperiodic spin chains
• Thermalization propagation front and robustness against avalanches in localized systems
• Cat states carrying long-range correlations in the many-body localized phase
• Operator Growth in Disordered Spin Chains: Indications for the Absence of Many-Body Localization
• Interacting quasiperiodic spin chains in the prethermal regime
• Thermal avalanches in isolated many-body localized systems
• Krylov-space anatomy and spread complexity of a disordered quantum spin chain
• Long-range resonances in quasiperiodic many-body localization
• Two-dimensional many-body localized systems coupled to a heat bath
• Quantum Avalanches in ${\mathbb{Z}}_2$-preserving Interacting Ising Majorana Chain
• From Bell Products to Greenberger-Horne-Zeilinger states: Quantum Memories via emergent Hamiltonians
• Large deviations in the many-body localization transition: The case of the random-field XXZ chain
• Anderson Localization on Husimi Trees and its implications for Many-Body localization