Monopole clusters in Abelian projected gauge theories

Abstract

We show that the monopole currents which one obtains in the maximally Abelian gauge of SU(2) fall into two quite distinct classes (when the volume is large enough). In each field configuration there is precisely one cluster that permeates the whole lattice volume. It has a current density and a magnetic screening mass that scale and it produces the whole of the string tension. The remaining clusters have a number density that follows an approximate power law proportional to the inverse cube of l where l is the length of the monopole world line in lattice units. These clusters are localised in space-time with radii which vary as the square root of l. In terms of the radius r these `lumps' have a scale-invariant distribution proportional to (dr/r . 1/{r^4}). Moreover they appear not to contribute at all to the string tension. The fact that they are scale-invariant at small distances would seem to rule out an instanton origin.

LaTeX, 31 pages, 11 PostScript figures. Typo in Table 2 corrected

References in corpus (6)

• Dual Superconductor Scenario of Confinement: A Systematic Study of Gribov Copy Effects
• String Tension from Monopoles in SU(2) Lattice Gauge Theory
• Instantons and Monopoles in the Maximally Abelian Gauge
• SU(2) Potentials from Large Lattices
• Clustering of Monopoles in the Instanton Vacuum
• Gribov Copies in the Maximally Abelian Gauge and Confinement

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