Transport in a System with a Tower of Quantum Many-Body Scars
arXiv:2502.10387 · doi:10.1103/821h-8yjz
Abstract
We report the observation of unconventional transport phenomena in a spin-1 model that supports a tower of quantum many-body scars, and we discuss their properties uncovering their peculiar nature. In quantum many-body systems, the late-time dynamics of local observables are typically governed by conserved operators with local densities, such as energy and magnetization. In the model under investigation, however, there is an additional dynamical symmetry restricted to the subspace of the Hilbert space spanned by the quantum many-body scars. The latter significantly slows the decay of autocorrelation functions of certain coherent states of quantum many-body scars and is responsible for the unconventional form of transport that we detect numerically. We show that excited states with energy close to that of the quantum many-body scars play a crucial role in sustaining the transport. Finally, we propose a generalized eigenstate thermalization hypothesis to describe specific properties of states with energy close to the scars.
arXiv commentMinor modifications. Closer to the published version
References in corpus (60)
- Probing many-body dynamics on a 51-atom quantum simulator
- From Quantum Chaos and Eigenstate Thermalization to Statistical Mechanics and Thermodynamics
- The ITensor Software Library for Tensor Network Calculations
- Quantum many-body scars
- Time-dependent variational principle for quantum lattices
- Unifying time evolution and optimization with matrix product states
- Time-evolution methods for matrix-product states
- The approach to thermal equilibrium in quantized chaotic systems
- Quantum Many-Body Scars and Weak Breaking of Ergodicity
- Quantum Many-Body Scars and Hilbert Space Fragmentation: A Review of Exact Results
- Non-stationary coherent quantum many-body dynamics through dissipation
- Weak Ergodicity Breaking and Quantum Many-Body Scars in Spin-1 XY Magnets
- Lattice gauge theories and string dynamics in Rydberg atom quantum simulators
- Quantum Many-Body Scars: A Quasiparticle Perspective
- Quantum Many-Body Scar States with Emergent Kinetic Constraints and Finite-Entanglement Revivals
- Unified structure for exact towers of scar states in the AKLT and other models
- Eta-Pairing in Hubbard Models: From Spectrum Generating Algebras to Quantum Many-Body Scars
- The Eigenstate Thermalization Hypothesis and Out of Time Order Correlators
- Quantum Many-Body Scars and Space-Time Crystalline Order from Magnon Condensation
- Eta-pairing states as true scars in an extended Hubbard Model
- Superdiffusion in spin chains
- The isolated Heisenberg magnet as a quantum time crystal
- Superuniversality of superdiffusion
- Reducing the numerical effort of finite-temperature density matrix renormalization group transport calculations
- Eigenstate Thermalization Hypothesis and Free Probability
- The Folded Spin-1/2 XXZ Model: I. Diagonalisation, Jamming, and Ground State Properties
- Stability of superdiffusion in nearly integrable spin chains
- Slow Thermalization of Exact Quantum Many-Body Scar States Under Perturbations
- Stripes, Antiferromagnetism, and the Pseudogap in the Doped Hubbard Model at Finite Temperature
- Extending the range of real time density matrix renormalization group simulations
- The Folded Spin-1/2 XXZ Model: II. Thermodynamics and Hydrodynamics with a Minimal Set of Charges
- Extensive multipartite entanglement from su(2) quantum many-body scars
- Hilbert space fragmentation and slow dynamics in particle-conserving quantum East models
- Performance of the time-dependent variational principle for matrix product states in long-time evolution of a pure state
- Superdiffusive Energy Transport in Kinetically Constrained Models
- Quantum many-body scars in bipartite Rydberg arrays originate from hidden projector embedding
- Quantum Information Scrambling in Quantum Many-body Scarred Systems
- Eigenstate thermalization and rotational invariance in ergodic quantum systems
- Rigorous bounds on dynamical response functions and time-translation symmetry breaking
- Subdiffusive hydrodynamics of nearly-integrable anisotropic spin chains
- Exhaustive Characterization of Quantum Many-Body Scars using Commutant Algebras
- Out-of-Time-Ordered Crystals and Fragmentation
- Full Eigenstate Thermalization via Free Cumulants in Quantum Lattice Systems
- Asymptotic Quantum Many-Body Scars
- Fractionalization paves the way to local projector embeddings of quantum many-body scars
- Observation of anomalous information scrambling in a Rydberg atom array
- Hydrodynamics and the eigenstate thermalization hypothesis
- Superdiffusion from nonabelian symmetries in nearly integrable systems
- Macroscopic effects of localised measurements in jammed states of quantum spin chains
- Proposal for simulating quantum spin models with the Dzyaloshinskii-Moriya interaction using Rydberg atoms and the construction of asymptotic quantum many-body scar states
- Measurement catastrophe and ballistic spread of charge density with vanishing current
- Quantum Many-Body Scars beyond the PXP model in Rydberg simulators
- Unraveling PXP Many-Body Scars through Floquet Dynamics
- Microcanonical Free Cumulants in lattice systems
- Anomalous transport in the kinetically constrained quantum East-West model
- Spin parity effects in monoaxial chiral ferromagnetic chain
- Quantum jamming brings quantum mechanics to macroscopic scales
- Energy-filtered quantum states and the emergence of non-local correlations
- Random matrix universality in dynamical correlation functions at late times
- Scar-induced imbalance in staggered Rydberg ladders