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.

References in corpus (56)

• Many body localization and thermalization in quantum statistical mechanics
• Efficient classical simulation of slightly entangled quantum computations
• From Quantum Chaos and Eigenstate Thermalization to Statistical Mechanics and Thermodynamics
• Metal-insulator transition in a weakly interacting many-electron system with localized single-particle states
• Localization of interacting fermions at high temperature
• Many-body localization, thermalization, and entanglement
• Efficient simulation of one-dimensional quantum many-body systems
• Observation of many-body localization of interacting fermions in a quasi-random optical lattice
• The many-body localization phase transition
• Many-body localization edge in the random-field Heisenberg chain
• The ITensor Software Library for Tensor Network Calculations
• Interacting electrons in disordered wires: Anderson localization and low-temperature transport
• Phenomenology of fully many-body-localized systems
• A phenomenology of certain many-body-localized systems
• Local conservation laws and the structure of the many-body localized states
• Many-body localization in a quantum simulator with programmable random disorder
• Time-dependent variational principle for quantum lattices
• Unifying time evolution and optimization with matrix product states
• Many-body localization: an introduction and selected topics
• Probing entanglement in a many-body-localized system
• Integrals of motion in the Many-Body localized phase
• Quantum chaos challenges many-body localization
• Stability and instability towards delocalization in MBL systems
• Absence of diffusion in an interacting system of spinless fermions on a one-dimensional disordered lattice
• Extended slow dynamical regime close to the many-body localization transition
• Diagonalization and Many-Body Localization for a Disordered Quantum Spin Chain
• Avalanches and many-body resonances in many-body localized systems
• Observation of Slow Dynamics near the Many-Body Localization Transition in One-Dimensional Quasiperiodic Systems
• Multifractal Scalings across the Many-Body Localization Transition
• A criterion for many-body localization-delocalization phase transition
• Entanglement entropy for the long range Ising chain
• Observation of many-body localization in a one-dimensional system with single-particle mobility edge
• Thouless time analysis of Anderson and many-body localization transitions
• Rare region effects and dynamics near the many-body localization transition
• Quantum critical behavior at the many-body-localization transition
• Ergodicity Breaking Transition in Finite Disordered Spin Chains
• Low-frequency conductivity in many-body localized systems
• Many-body localization and delocalization in large quantum chains
• Quantum Griffiths effects and smeared phase transitions in metals: theory and experiment
• Challenges to observation of many-body localization
• Polynomially filtered exact diagonalization approach to many-body localization
• Absence of true localization in many-body localized phases
• Markovian baths and quantum avalanches
• Time Evolution of Many-Body Localized Systems with the Flow Equation Approach
• Time dynamics with matrix product states: Many-body localization transition of large systems revisited
• Many-body delocalization in the presence of a quantum bath
• Signatures of bath-induced quantum avalanches in a many-body--localized system
• Many-body Localization Transition: Schmidt Gap, Entanglement Length & Scaling
• Chain breaking and Kosterlitz-Thouless scaling at the many-body localization transition in the random field Heisenberg spin chain
• Thermalization of dilute impurities in one dimensional spin chains
• Efficient representation of fully many-body localized systems using tensor networks
• Are many-body localized systems stable in the presence of a small bath?
• Simulating hydrodynamics on noisy intermediate-scale quantum devices with random circuits
• Performance of the time-dependent variational principle for matrix product states in long-time evolution of a pure state
• Universal dynamics of density correlations at the transition to many-body localized state
• Semiclassical bounds on dynamics of two-dimensional interacting disordered fermions

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• 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