Equation of State of Gluon Plasma and Renormalization of Local Action
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2007
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| _version_ | 1876466847652511744 |
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| author | Daniel Zwanziger |
| author_facet | Daniel Zwanziger |
| contents | Equation of State of Gluon Plasma and Renormalization of Local Action Daniel Zwanziger Física, Astronomía y Matemáticas QCD Gluon plasma Spontaneous breaking of BRST We consider a local, renormalizable, BRST-invariant action for QCD in Coulomb gauge that contains auxiliarybose and fermi ghost fields. It possess a non-perturbative vacuum that spontaneously breaks BRSTinvariance.The vacuum condition leads to a gap equation that introduces a mass scale. Calculations are doneto one-loop order in a perturbative expansion about this vacuum. They are free of the finite-T infrared divergencesfound by Lind´e and which occur in the order g6 corrections to the Stefan-Boltzmann equation of state.We obtain a finite result for these corrections. Renormalization and renormalization-group flow are described.We calculate the ghost propagator and color-Coulomb potential to one-loop and find that they are long range,whereas the 3-dimensionally transverse would-be physical gluon propagator is suppressed like k2 at small |k|.These one-loop results accord with the Gribov scenario in Coulomb gauge and with recent numerical determinationsof these quantities. When the auxiliary fields are integrated out, one obtains the standard Coulomb gaugeaction with a cut-off at the Gribov horizon. 2007 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46437202 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1B Vol.37 |
| format | Artículo científico |
| id | redalyc_46437202 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Equation of State of Gluon Plasma and Renormalization of Local Action Daniel Zwanziger Física, Astronomía y Matemáticas QCD Gluon plasma Spontaneous breaking of BRST Equation of State of Gluon Plasma and Renormalization of Local Action Daniel Zwanziger Física, Astronomía y Matemáticas QCD Gluon plasma Spontaneous breaking of BRST We consider a local, renormalizable, BRST-invariant action for QCD in Coulomb gauge that contains auxiliarybose and fermi ghost fields. It possess a non-perturbative vacuum that spontaneously breaks BRSTinvariance.The vacuum condition leads to a gap equation that introduces a mass scale. Calculations are doneto one-loop order in a perturbative expansion about this vacuum. They are free of the finite-T infrared divergencesfound by Lind´e and which occur in the order g6 corrections to the Stefan-Boltzmann equation of state.We obtain a finite result for these corrections. Renormalization and renormalization-group flow are described.We calculate the ghost propagator and color-Coulomb potential to one-loop and find that they are long range,whereas the 3-dimensionally transverse would-be physical gluon propagator is suppressed like k2 at small |k|.These one-loop results accord with the Gribov scenario in Coulomb gauge and with recent numerical determinationsof these quantities. When the auxiliary fields are integrated out, one obtains the standard Coulomb gaugeaction with a cut-off at the Gribov horizon. 2007 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46437202 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1B Vol.37 |
| title | Equation of State of Gluon Plasma and Renormalization of Local Action |
| topic | Física, Astronomía y Matemáticas QCD Gluon plasma Spontaneous breaking of BRST |
| url | https://www.redalyc.org/articulo.oa?id=46437202 |