Topological aspects of QCD

Abstract

We review recent results from lattice on topological aspects of QCD: most of the results refer to monopoles and to instantons. We discuss in detail the evidence for condensation of monopoles in the vacuum and confinement of colour by dual superconductivity, and the major role of monopoles in dynamics (monopole dominance). As for instantons we review the $U(1)$ problem, a possible determination of the spin content of the proton, and new lattice data relevant to instanton liquid models.

8 pages, to be published in the Proceedings of Lattice 95, uuencoded postscript file. IFUP-TH 49/95

References in corpus (14)

• Monopoles, Duality and Chiral Symmetry Breaking in N=2 Supersymmetric QCD
• Perfect lattice action for asymptotically free theories
• Colour confinement as dual Meissner effect: $SU(2)$ gauge theory
• Detecting Dual Superconductivity in the Ground State of Gauge Theory
• The (dual) Meissner effect in SU(2) and SU(3) QCD
• Monopole currents and Dirac sheets in U(1) lattice gauge theory
• Chiral limit of QCD
• Topological charge density renormalization in the presence of dynamical fermions
• Theta Vacua, Confinement and the Continuum Limit
• Perfect topological charge for asymptotically free theories
• Monopole condensation ans superconductivity: the $SU(2)$ case
• String tension and monopoles in $T\ne 0$ SU(2) QCD
• Monopole condensation in the ground state of gauge theories: a disorder parameter
• QCD correlation functions and instantons

Cited by in corpus (8)

• Colour confinement and dual superconductivity of the vacuum - I
• Off-diagonal Gluon Mass Generation and Infrared Abelian Dominance in the Maximally Abelian Gauge in Lattice QCD
• The Diagonal Ghost Equation Ward Identity for Yang-Mills Theories in the Maximal Abelian Gauge
• Abelian chromomagnetic fields and confinement
• Color Dynamics in External Fields
• Semi-analytical Proof of Abelian Dominance on Confinement in the Maximally Abelian Gauge
• Monopoles and Gluon Fields in QCD in the Maximally Abelian Gauge
• Instanton, Monopole Condensation and Confinement