Correlation of the Ghost and the Quark in the Lattice Landau Gauge QCD
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2007
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| _version_ | 1876469362226888704 |
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| author | Sadataka Furui |
| author_facet | Sadataka Furui |
| contents | Correlation of the Ghost and the Quark in the Lattice Landau Gauge QCD Sadataka Furui Hideo Nakajima Física, Astronomía y Matemáticas Dynamical mass Binder Cumulant Ghost propagator Quark propagator Effects of the quark field on the ghost propagator of the lattice Landau gauge are investigated by using theunquenched SU(3) configurations produced by the MILC collaboration and compared with quenched gaugeconfigurations of SU(2) first copy of the overrelaxation gauge fixing, the parallel tempering (PT) gauge fixingand quenched SU(3) 564 configurations. We measure the color symmetric and the color antisymmetric ghostpropagator and the Binder cumulant of the l1 norm and the l2 norm of color antisymmetric ghost propagatorsand investigate deviation from those of Gaussian distributions. In the first copy samples of quenched SU(2) weobserve a large fluctuation in the Binder cumulant at the lowest momentum point. This fluctuation is reducedin the PT gauge fixed samples. The color anti-symmetric ghost propagator of quenched SU(3) configurationsdepends on the lattice size and is small as compared to the symmetric one in the large lattice of 564. TheBinder cumulants of the quenched SU(2) and the Nf = 2+1 unquenched SU(3) are almost consistent with3-d and 8-d Gaussian distribution, respectively. A comparison of the SU(3) unquenched configurations andquenched configurations indicates that the dynamical quarks have the effect of making color antisymmetricghost propagator closer to the Gaussian distribution and the Kugo-Ojima color confinement parameter c closerto 1. 2007 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46437205 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_46437205 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Correlation of the Ghost and the Quark in the Lattice Landau Gauge QCD Sadataka Furui Física, Astronomía y Matemáticas Dynamical mass Binder Cumulant Ghost propagator Quark propagator Correlation of the Ghost and the Quark in the Lattice Landau Gauge QCD Sadataka Furui Hideo Nakajima Física, Astronomía y Matemáticas Dynamical mass Binder Cumulant Ghost propagator Quark propagator Effects of the quark field on the ghost propagator of the lattice Landau gauge are investigated by using theunquenched SU(3) configurations produced by the MILC collaboration and compared with quenched gaugeconfigurations of SU(2) first copy of the overrelaxation gauge fixing, the parallel tempering (PT) gauge fixingand quenched SU(3) 564 configurations. We measure the color symmetric and the color antisymmetric ghostpropagator and the Binder cumulant of the l1 norm and the l2 norm of color antisymmetric ghost propagatorsand investigate deviation from those of Gaussian distributions. In the first copy samples of quenched SU(2) weobserve a large fluctuation in the Binder cumulant at the lowest momentum point. This fluctuation is reducedin the PT gauge fixed samples. The color anti-symmetric ghost propagator of quenched SU(3) configurationsdepends on the lattice size and is small as compared to the symmetric one in the large lattice of 564. TheBinder cumulants of the quenched SU(2) and the Nf = 2+1 unquenched SU(3) are almost consistent with3-d and 8-d Gaussian distribution, respectively. A comparison of the SU(3) unquenched configurations andquenched configurations indicates that the dynamical quarks have the effect of making color antisymmetricghost propagator closer to the Gaussian distribution and the Kugo-Ojima color confinement parameter c closerto 1. 2007 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46437205 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 | Correlation of the Ghost and the Quark in the Lattice Landau Gauge QCD |
| topic | Física, Astronomía y Matemáticas Dynamical mass Binder Cumulant Ghost propagator Quark propagator |
| url | https://www.redalyc.org/articulo.oa?id=46437205 |