Lattice calculation of the QGP viscosities - Present results and next project -

Details Lattice calculation of the QGP viscosities - Present results and next project - Lattice calculation of the QGP viscosities - Present results and next project -

2007-10-19

arxiv.org/abs/0710.3625v1

PoSLAT2007:221,2007

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 5 figures, The XXV International Symposium on Lattice Field Theory(Regensburg, 2007)

Scientific paper

10.1063/1.2729742

The shear and bulk viscosities of gluon plasma are calculated by accumulating a large amount of data for the Matsubara Green function ($G_{\beta}(t_m)$) on isotropic $24^3 \times 8$ and $16^3 \times 8$ lattices. In the case of Iwasaki's improved action, the calculations of $G_{\beta}(t_m)$ are carried out on roughly 6 million configurations, while for the standard action the calculations are done on more than 16 million configurations. The shear viscosities increase roughly with $T^3$, and $\eta/s$ ratios are close to the KSS lower bound in the region where $1

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