Nonequilibrium quark production in the expanding QCD plasma

2018/07/13 by Naoto Tanji, Jürgen Berges, Juergen Berges
Physics and Astronomy · #Geometry #Hadron #High-Energy Particle Collisions Research #Kinetic energy #Lattice (music) #Lattice QCD #Non-equilibrium thermodynamics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Plasma #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Quark–gluon plasma #Rapidity #Scaling #Scattering #Transverse plane #hep-ph #nucl-th

paper · pdf · doi:10.1016/j.nuclphysa.2018.08.016

Quark Matter 2018 proceedings

arxiv created 2018/07/13 · openalex publication_date 2019/01/22 · arxiv updated 2019/02/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present real-time lattice simulation results for nonequilibrium quark production from an over-occupied gluon plasma in longitudinally expanding geometry. The quark number density per unit transverse area and rapidity shows almost linear growth in time, and its growth rate appears to be consistent with a simple kinetic theory estimate involving only two-to-two scattering processes in small-angle approximation. We also find that quarks produced at early times satisfy a nonequilibrium scaling law.

Citations

• Nonthermal Fixed Points: Effective Weak Coupling for Strongly Correlated Systems Far from Equilibrium
• Universal attractor in a highly occupied non-Abelian plasma
• Quark production, Bose–Einstein condensates and thermalization of the quark–gluon plasma
• Chiral magnetic and vortical effects in high-energy nuclear collisions—A status report
• Transient anomalous charge production in strong-field QCD
• Effective kinetic description of the expanding overoccupied glasma