Hadrons from QCDNo Access

CONFINING TIME-LIKE GLUON AND CONFINED SPATIAL GLUONS IN COULOMB GAUGE QCD

Y. NAKAGAWA

Research Center for Nuclear Physics, Osaka University, Ibarakishi, Osaka 567-0044, Japan

Search for more papers by this author

A. NAKAMURA

Research Institute for Information Science and Education, Hiroshima University, Higashi-Hiroshima 739-8521, Japan

Search for more papers by this author

T. SAITO

Integrated Information Center, Kochi University, Kochi, 780-8520, Japan

Search for more papers by this author

, and

H. TOKI

Research Center for Nuclear Physics, Osaka University, Ibarakishi, Osaka 567-0044, Japan

Search for more papers by this author

https://doi.org/10.1142/S0217732308029368Cited by:1 (Source: Crossref)

Abstract

We investigate the Gribov-Zwanziger scenario in Coulomb gauge QCD using a SU(3) quenched lattice gauge simulation. The ghost propagator diverges in the infrared limit stronger than the free ghost propagator, and the ghost degree of freedom plays a central role in the confinement mechanism in the Coulomb gauge. The infrared divergent ghost dressing function results in the confining color-Coulomb instantaneous interaction. The equal-time transverse gluon propagator is suppressed in the infrared region. Therefore, in the Coulomb gauge, the instantaneous interaction mediated by time-like gluons is responsible for the confining force, and the would-be physical gluons are confined in hadrons.

Keywords:

PACS: 12.38.Aw, 12.38.Gc, 11.15.Ha