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An infrared singularity in the damping rate for longitudinal gluons in hot QCD
We determine the singularity in $\gamma_l(0)$, the longitudinal damping rate for on-shell gluons with zero momentum in hot QCD. This result shows in particular that $\gamma_l(0)$ is different from $\gamma_t(0)$, the corresponding damping rate for transverse gluons which is known to be finite. The fa...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1999
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(99)00959-4 http://cds.cern.ch/record/360465 |
| Sumario: | We determine the singularity in $\gamma_l(0)$, the longitudinal damping rate for on-shell gluons with zero momentum in hot QCD. This result shows in particular that $\gamma_l(0)$ is different from $\gamma_t(0)$, the corresponding damping rate for transverse gluons which is known to be finite. The fact that the singularity persists suggests that the hard thermal loop scheme in which the calculation is performed may need to be improved upon. |
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