Nonmesonic Quantum Many-Body Scars in a 1D Lattice Gauge Theory
arXiv:2303.13156 · doi:10.1103/PhysRevLett.132.230403
Abstract
We investigate the meson excitations (particle-antiparticle bound states) in quantum many-body scars of a 1D lattice gauge theory coupled to a dynamical spin- chain as a matter field. By introducing a string representation of the physical Hilbert space, we express a scar state as a superposition of all string bases with an identical string number and a total length . For the small- scar state , the gauge-invariant spin exchange correlation function of the matter field hosts an exponential decay as the distance increases, indicating the existence of stable mesons. However, for large , the correlation function exhibits a power-law decay, signaling the emergence of nonmesonic excitations. Furthermore, we show that this mesonic-nonmesonic crossover can be detected by the quench dynamics, starting from two low-entangled initial states, respectively, which are experimentally feasible in quantum simulators. Our results expand the physics of quantum many-body scars in lattice gauge theories and reveal that the nonmesonic state can also manifest ergodicity breaking.
arXiv comment7+2 pages, 4+1 figures
References in corpus (74)
- Many-Body Physics with Ultracold Gases
- Chaos and Quantum Thermalization
- Thermalization and its mechanism for generic isolated quantum systems
- Quantum Simulation
- Nonequilibrium dynamics of closed interacting quantum systems
- Probing many-body dynamics on a 51-atom quantum simulator
- Many body localization and thermalization in quantum statistical mechanics
- From Quantum Chaos and Eigenstate Thermalization to Statistical Mechanics and Thermodynamics
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Metal-insulator transition in a weakly interacting many-electron system with localized single-particle states
- Many-body localization, thermalization, and entanglement
- Relaxation in a Completely Integrable Many-Body Quantum System: An Ab Initio Study of the Dynamics of the Highly Excited States of Lattice Hard-Core Bosons
- Average Entropy of a Subsystem
- The many-body localization phase transition
- Many-Body Physics with Individually-Controlled Rydberg Atoms
- Quantum many-body scars
- Phenomenology of fully many-body-localized systems
- A phenomenology of certain many-body-localized systems
- Natural and artificial atoms for quantum computation
- Many-body localization in a disordered quantum Ising chain
- The approach to thermal equilibrium in quantized chaotic systems
- Simulating Lattice Gauge Theories within Quantum Technologies
- Quantum Many-Body Scars and Hilbert Space Fragmentation: A Review of Exact Results
- Quantum scarred eigenstates in a Rydberg atom chain: entanglement, breakdown of thermalization, and stability to perturbations
- Floquet approach to lattice gauge theories with ultracold atoms in optical lattices
- Emergent SU(2) dynamics and perfect quantum many-body scars
- Entanglement of Exact Excited States of AKLT Models: Exact Results, Many-Body Scars and the Violation of Strong ETH
- Atomic Quantum Simulation of Dynamical Gauge Fields coupled to Fermionic Matter: From String Breaking to Evolution after a Quench
- Real time confinement following a quantum quench to a non-integrable model
- Periodic orbits, entanglement and quantum many-body scars in constrained models: matrix product state approach
- Short-ranged RVB physics, quantum dimer models and Ising gauge theories
- Non-stationary coherent quantum many-body dynamics through dissipation
- Exact Quantum Many-Body Scar States in the Rydberg-Blockaded Atom Chain
- Weak Ergodicity Breaking and Quantum Many-Body Scars in Spin-1 XY Magnets
- Exact Excited States of Non-Integrable Models
- Realization of density-dependent Peierls phases to engineer quantized gauge fields coupled to ultracold matter
- Lattice gauge theories and string dynamics in Rydberg atom quantum simulators
- Lattice gauge theories simulations in the quantum information era
- Quantum Many-Body Scars: A Quasiparticle Perspective
- Simulating lattice gauge theories on a quantum computer
- Spectral statistics across the many-body localization transition
- Resolution of Gauge Ambiguities in Ultrastrong-Coupling Cavity QED
- Hilbert-Space Fragmentation from Strict Confinement
- 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
- Onsager's Scars in Disordered Spin Chains
- Eta-Pairing in Hubbard Models: From Spectrum Generating Algebras to Quantum Many-Body Scars
- Observation of many-body scarring in a Bose--Hubbard quantum simulator
- Nonthermal states arising from confinement in one and two dimensions
- Quantum Many-Body Scars and Space-Time Crystalline Order from Magnon Condensation
- Many Body Scars as a Group Invariant Sector of Hilbert Space
- Eta-pairing states as true scars in an extended Hubbard Model
- Real Time Dynamics and Confinement in the Schwinger-Weyl lattice model for 1+1 QED
- Signatures of rare states and thermalization in a theory with confinement
- Observation of a symmetry-protected topological time crystal with superconducting qubits
- Quantum scars from zero modes in an Abelian lattice gauge theory on ladders
- The isolated Heisenberg magnet as a quantum time crystal
- From tunnels to towers: quantum scars from Lie Algebras and q-deformed Lie Algebras
- Quasi-symmetry groups and many-body scar dynamics
- Connection between quantum-many-body scars and the AKLT model from the viewpoint of embedded Hamiltonians
- Weak Ergodicity Breaking in the Schwinger Model
- Slow Thermalization of Exact Quantum Many-Body Scar States Under Perturbations
- Prominent quantum many-body scars in a truncated Schwinger model
- Matrix Model simulations using Quantum Computing, Deep Learning, and Lattice Monte Carlo
- Prethermalization in one-dimensional quantum many-body systems with confinement
- Gauge freedom, quantum measurements, and time-dependent interactions in cavity and circuit QED
- Scar States in Deconfined Lattice Gauge Theories
- Gauge Principle and Gauge Invariance in Two-Level Systems
- Gauge Principle and Gauge Invariance in Quantum Two-Level Systems
- Confinement and Mott transitions of dynamical charges in 1D lattice gauge theories
- Quantum Simulation of Z2 Lattice Gauge theory with minimal resources
- Composite Spin Approach to the Blockade Effect in Rydberg Atom Arrays
- Quantum Simulation of Lattice Gauge Theories on Superconducting Circuits: Quantum Phase Transition and Quench Dynamics
- Confinement-Induced Enhancement of Superconductivity in a Spin- Fermion Chain Coupled to a Lattice Gauge Field