2016/03/31 by Naoto Tanji, N. Tanji, Niklas Mueller +3 · 1 citation
Physics and Astronomy · #Anomaly (physics) #Charge (physics) #Context (archaeology) #Fermion #Fermionic field #Gauge (firearms) #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Pair production #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.93.074507
published as Phys. Rev. D 93, 074507 (2016) · 12 pages, 10 figures; To appear in Phys. Rev. D
arxiv created 2016/04/08 · openalex publication_date 2016/04/15 · arxiv updated 2016/04/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate axial charge production in two-color QCD out of equilibrium. We compute the real-time evolution starting with spatially homogeneous strong gauge fields, while the fermions are in vacuum. The idealized class of initial conditions is motivated by glasma flux tubes in the context of heavy-ion collisions. We focus on axial charge production at early times, where important aspects of the anomalous dynamics can be derived analytically. This is compared to real-time lattice simulations. Quark production at early times leading to anomalous charge generation is investigated using Wilson fermions. Our results indicate that coherent gauge fields can transiently produce significant amounts of axial charge density, while part of the induced charges persist to be present even well beyond characteristic decoherence times. The comparisons to analytic results provide stringent tests of real-time representations of the axial anomaly on the lattice.