Mass-Assisted Local Deconfinement in a Confined ${\mathbb{Z}}_2$ Lattice Gauge Theory

Abstract

Confinement is a prominent phenomenon in condensed matter and high-energy physics that has recently become the focus of quantum-simulation experiments of lattice gauge theories (LGTs). As such, a theoretical understanding of the effect of confinement on LGT dynamics is not only of fundamental importance, but can lend itself to upcoming experiments. Here, we show how confinement in a ${\mathbb{Z}}_2$ LGT can be locally avoided by proximity to a resonance between the fermion mass and the electric field strength. Furthermore, we show that this local deconfinement can become global for certain initial conditions, where information transport occurs over the entire chain. In addition, we show how this can lead to strong quantum many-body scarring starting in different initial states. Our findings provide deeper insights into the nature of confinement in ${\mathbb{Z}}_2$ LGTs and can be tested on current and near-term quantum devices.

$16$ pages, $16$ figures

References in corpus (44)

• Probing many-body dynamics on a 51-atom quantum simulator
• Localization of interacting fermions at high temperature
• The distribution of the ratio of consecutive level spacings in random matrix ensembles
• Quantum Many-Body Scars and Weak Breaking of Ergodicity
• Quantum Many-Body Scars and Hilbert Space Fragmentation: A Review of Exact Results
• Controlling many-body dynamics with driven quantum scars in Rydberg atom arrays
• Quantum Simulation for High Energy Physics
• Quantum Many-Body Scars: A Quasiparticle Perspective
• Thermalization dynamics of a gauge theory on a quantum simulator
• Quantum Computing for High-Energy Physics: State of the Art and Challenges. Summary of the QC4HEP Working Group
• Quantum Many-Body Scar States with Emergent Kinetic Constraints and Finite-Entanglement Revivals
• Standard Model Physics and the Digital Quantum Revolution: Thoughts about the Interface
• Observation of many-body scarring in a Bose--Hubbard quantum simulator
• Quantum scars from zero modes in an Abelian lattice gauge theory on ladders
• Many-body Hilbert space scarring on a superconducting processor
• Quantum Simulation of Lattice Gauge Theories in more than One Space Dimension -- Requirements, Challenges, Methods
• A proposal for realising quantum scars in the tilted 1D Fermi-Hubbard model
• Catching Bethe phantoms and quantum many-body scars: Long-lived spin-helix states in Heisenberg magnets
• Weak Ergodicity Breaking in the Schwinger Model
• Prominent quantum many-body scars in a truncated Schwinger model
• Realistic scheme for quantum simulation of ${\mathbb{Z}}_2$ lattice gauge theories with dynamical matter in $(2+1)$D
• Tuning the Topological $\theta$-Angle in Cold-Atom Quantum Simulators of Gauge Theories
• Scars from protected zero modes and beyond in $U(1)$ quantum link and quantum dimer models
• Driving quantum many-body scars in the PXP model
• Scar States in Deconfined ${\mathbb{Z}}_2$ Lattice Gauge Theories
• Fragmentation and emergent integrable transport in the weakly tilted Ising chain
• Probing confinement in a ${\mathbb{Z}}_2$ lattice gauge theory on a quantum computer
• Confinement and Mott transitions of dynamical charges in 1D lattice gauge theories
• Tunable Confinement-Deconfinement Transition in an Ultracold Atom Quantum Simulator
• Emergent Gauge Theory in Rydberg Atom Arrays
• Confinement and Kink Entanglement Asymmetry on a Quantum Ising Chain
• Rydberg platform for non-ergodic chiral quantum dynamics
• Preparing quantum many-body scar states on quantum computers
• Entanglement Entropy of ($2+1$)-Dimensional SU(2) Lattice Gauge Theory on Plaquette Chains
• Bridging quantum criticality via many-body scarring
• Disorder-tunable entanglement at infinite temperature
• First-Order Phase Transition of the Schwinger Model with a Quantum Computer
• Simulating ${\mathbb{Z}}_2$ Lattice Gauge Theory with the Variational Quantum Thermalizer
• Sublattice scars and beyond in two-dimensional $U(1)$ quantum link lattice gauge theories
• Ergodicity Breaking Under Confinement in Cold-Atom Quantum Simulators
• Confinement in 1+1D ${\mathbb{Z}}_2$ Lattice Gauge Theories at Finite Temperature
• Percolation as a confinement order parameter in ${\mathbb{Z}}_2$ lattice gauge theories
• Confinement Induced Frustration in a One-Dimensional ${\mathbb{Z}}_2$ Lattice Gauge Theory
• Kinetically constrained models constructed from dissipative quantum dynamics

Cited by in corpus (1)

• Disorder-Free Localization and Fragmentation in a Non-Abelian Lattice Gauge Theory