Thermodynamics of Lattice QCD with 2 Quark Flavours: Chiral Symmetry and Topology

1998/06/01 by J. -F. Lagae, J.-F. Lagaë, D. K. Sinclair +4
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #hep-lat

paper · pdf · doi:10.48550/arxiv.hep-lat/9806001

LaTeX, 12 pages, 5 figures. Talk presented by D.K.Sinclair at Workshop on Nonperturbative Methods in Quantum Field Theory, 2nd-13th February, 1988, Adelaide, South Australia

arxiv created 1998/06/01 · openalex publication_date 1998/06/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We have studied the restoration of chiral symmetry in lattice QCD at the finite temperature transition from hadronic matter to a quark-gluon plasma. By measuring the screening masses of flavour singlet and non-singlet meson excitations, we have seen evidence that, although flavour chiral symmetry is restored at this transition, flavour singlet (U(1)) axial symmetry is not. We conclude that this indicates that instantons continue to play an important role in the quark-gluon plasma phase.

Related

• The fate of U_A(1) and topological features of QCD at finite temperature
• Chiral symmetry restoration in QCD with many flavours
• Chiral transition in a Non-Abelian Quasi-Particle Model with three quark flavours
• Lattice QCD at finite temperature: some aspects related to chiral symmetry
• Fate of Chiral Symmetries in the Quark-Gluon Plasma from an Instanton-Based Random Matrix Model of QCD