Nonequilibrium axial charge production in expanding glasma flux tubes

Abstract

Axial charge production at the early stage of heavy-ion collisions is investigated within the framework of real-time lattice simulations at leading order in QCD coupling. Starting from color glass condensate initial conditions, the time evolution of quantum quark fields under classical color gauge fields is computed on a lattice in longitudinally expanding geometry. We consider simple color charge distributions in Lorentz contracted nuclei that realize flux tube-like configurations of color fields carrying nonzero topological charge after a collision. By employing the Wilson fermion extended to the longitudinally expanding geometry, we demonstrate the realization of the axial anomaly on the real-time lattice.

30 pages, 13 figures; version published in Phys. Rev. D

References in corpus (13)

• The Chiral Magnetic Effect
• The Color Glass Condensate
• Some Features of the Glasma
• Chiral anomaly and local polarization effect from quantum kinetic approach
• Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC
• The Sphaleron Rate in SU(N) Gauge Theory
• The chiral magnetic effect in hydrodynamical approach
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• Anomalous Chiral Transport in Heavy Ion Collisions from Anomalous-Viscous Fluid Dynamics
• Chemical thermalization in relativistic heavy ion collisions
• Non-equilibrium study of the Chiral Magnetic Effect from real-time simulations with dynamical fermions
• Low-cost fermions in classical field simulations
• Nonequilibrium quark production in the expanding QCD plasma

Cited by in corpus (7)

• QCD thermalization: Ab initio approaches and interdisciplinary connections
• Chirality Production with Mass Effects-Schwinger Pair Production and the Axial Ward Identity
• Schwinger Pair Production in SL$(2,\mathbb{C})$ Topologically Non-Trivial Fields via Non-Abelian Worldline Instantons
• Fluctuations of topological charge and chiral density in the early stage of high energy nuclear collisions
• Rotating solutions of nonideal transverse Chern-Simons magnetohydrodynamics and the anomalous Hall current
• In-medium polarization tensor in strong magnetic fields (II): Axial Ward identity at finite temperature and density
• Gauge ambiguity of the quark spectrum in the Color Glass Condensate