Instantons and Monopoles for Nonperturbative QCD

Details Instantons and Monopoles for Nonperturbative QCD Instantons and Monopoles for Nonperturbative QCD

1998-04-17

arxiv.org/abs/hep-ph/9804315v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at ``EXPAF97'', Exciting Physics with New Accelerator Facilities,11-13 March 1997, Nishi-Harima, Japan,and to b

Scientific paper

We study the nonperturbative QCD in terms of topological objects, i.e., QCD-monopoles and instantons. In the 't Hooft abelian gauge, QCD is reduced into an abelian gauge theory with QCD-monopoles, and the confinement mechanism can be understood with the dual superconductor picture. Regarding the flux-tube ring as the glueball, we study the glueball properties by combining the dual Ginzburg-Landau theory and the Nambu-Goto action. We find the strong correlations between instantons and monopole world-lines both in the continuum theory and in the lattice QCD. The nonperturbative QCD vacuum is filled with instantons and monopoles, and dense instantons generate a macroscopic network of the monopole world-line, which would be responsible for the confinement force in the infrared region.

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