Quantum simulation of entanglement and hadronization in jet production: lessons from the massive Schwinger model

Abstract

The possible link between entanglement and thermalization, and the dynamics of hadronization are addressed by studying the real-time response of the massive Schwinger model coupled to external sources. This setup mimics the production and fragmentation of quark jets, as the Schwinger model and QCD share the properties of confinement and chiral symmetry breaking. By using quantum simulations on classical hardware, we study the entanglement between the produced jets, and observe the growth of the corresponding entanglement entropy in time. This growth arises from the increased number of contributing eigenstates of the reduced density matrix with sufficiently large and close eigenvalues. We also investigate the physical nature of these eigenstates, and find that at early times they correspond to fermionic Fock states. We then observe the transition from these fermionic Fock states to meson-like bound states as a function of time. In other words, we observe how hadronization develops in real time. At late times, the local observables at mid-rapidity (such as the fermion density and the electric field) approach approximately constant values, suggesting the onset of equilibrium and approach to thermalization.

10 pages, 12 figures

References in corpus (43)

• Area laws for the entanglement entropy - a review
• Entanglement spectrum of a topological phase in one dimension
• The ITensor Software Library for Tensor Network Calculations
• Eigenstate Thermalization Hypothesis
• Thermal hadron production in relativistic nuclear collisions: the hadron mass spectrum, the horn, and the QCD phase transition
• Quantum-Classical Computation of Schwinger Model Dynamics using Quantum Computers
• Quantum Simulation for High Energy Physics
• Thermal hadron production in pp and p{\bar p} collisions
• The mass spectrum of the Schwinger model with Matrix Product States
• Thermalization dynamics of a gauge theory on a quantum simulator
• Deep inelastic scattering as a probe of entanglement
• Quantum Computing for High-Energy Physics: State of the Art and Challenges. Summary of the QC4HEP Working Group
• From Color Glass Condensate to Quark Gluon Plasma through the event horizon
• Quantum Simulating Nature's Fundamental Fields
• The EPR paradox and quantum entanglement at sub-nucleonic scales
• Observation of quantum entanglement in top-quark pairs using the ATLAS detector
• Quantum simulation of non-equilibrium dynamics and thermalization in the Schwinger model
• Universality in volume law entanglement of pure quantum states
• Dynamical topological transitions in the massive Schwinger model with a θ-term
• Dynamics of entanglement in expanding quantum fields
• Weak Ergodicity Breaking in the Schwinger Model
• Entanglement generation in $(1+1)D$ QED scattering processes
• The Color Glass Condensate density matrix: Lindblad evolution, entanglement entropy and Wigner functional
• Real-time non-perturbative dynamics of jet production: quantum entanglement and vacuum modification
• Deep inelastic scattering as a probe of entanglement: confronting experimental data
• Thermalization of Gauge Theories from their Entanglement Spectrum
• Tuning the Topological $\theta$-Angle in Cold-Atom Quantum Simulators of Gauge Theories
• High-Energy Collision of Quarks and Mesons in the Schwinger Model: From Tensor Networks to Circuit QED
• Evidence for the maximally entangled low $x$ proton in Deep Inelastic Scattering from H1 data
• SU(2) Gauge Theory in $2+1$ Dimensions on a Plaquette Chain Obeys the Eigenstate Thermalization Hypothesis
• Entanglement entropy production in deep inelastic scattering
• Real-time dynamics of Chern-Simons fluctuations near a critical point
• Anomalous soft photon production from the induced currents in Dirac sea
• Eigenstate Thermalization in 2+1 dimensional SU(2) Lattice Gauge Theory
• Liouvillian Dynamics of the Open Schwinger Model: String Breaking and Kinetic Dissipation in a Thermal Medium
• Jet energy loss and fragmentation in heavy ion collisions
• Rapidity evolution of the entanglement entropy in quarkonium: parton and string duality
• Detecting the critical point through entanglement in Schwinger model
• Entanglement in massive Schwinger model at finite temperature and density
• Entanglement entropy of the proton in coordinate space
• LPM effect as the origin of the jet fragmentation scaling in heavy ion collisions
• Entanglement entropy and flow in two dimensional QCD: parton and string duality
• Non-linear chiral magnetic waves

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• State preparation of lattice field theories using quantum optimal control
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