New Ghost States in SU(3) Gauge Field Theory

Details New Ghost States in SU(3) Gauge Field Theory New Ghost States in SU(3) Gauge Field Theory

2006-12-26

arxiv.org/abs/hep-th/0612275v1

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

The ghost sector of SU(3) gauge field theory is studied, and new BRST-invariant states are presented that do not have any analog in other SU(N) field theories. The new states come in either ghost doublets or triplets, and they appear exclusively in SU(3) due to the fact that the non-Abelian part of the BRST charge has 3 ghost operators, while SU(3) has 3 pairs of off-diagonal gauge constraints. The states have finite, positive norms even though the triplet states do not have well-defined ghost numbers. It is speculated that this special nature of the ghost sector of SU(3) could play some role in QCD confinement.

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