Role of longitudinal boundary integrals in light front QCD
Feb 8, 199333 pages
Published in:
- Phys.Rev.D 48 (1993) 4868-4880
e-Print:
- hep-th/9302119 [hep-th]
Report number:
- OSU-NT-93-0122
Citations per year
Abstract:
In the canonical light-front QCD, the elimination of unphysical gauge degrees of freedom leads to a set of boundary integrals which are associated with the light-front infrared singularity. We find that a consistent treatment of the boundary integrals leads to the cancellation of the light-front linear infrared divergences. For physical states, the residual gauge fixing in the light-front gauge results in equations which determine the asymptotic behavior of the physical (transverse) gauge degrees of freedom at longitudinal infinity. These asymptotic fields are generated by the boundary integrals and they are responsible for the topological winding number. They also involve non-local behavior in the transverse direction that lead to non-local forces.- quantum chromodynamics
- gauge field theory: light front
- boundary condition
- infrared problem
- quantization
- gauge fixing
- quark: mass
- mass: quark
- perturbation theory
- bibliography
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