期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2018)179
关键词
Quark-Gluon Plasma; Thermal Field Theory
资金
- Deutsche Forschungsgemeinschaft (DFG) [CRC-TR 211]
- U.S. Department of Energy [DE-FG02-88ER40388]
- U.S. Department of Energy (DOE) [DE-FG02-88ER40388] Funding Source: U.S. Department of Energy (DOE)
We compute the shear viscosity of QCD with matter, including almost all next to-leading order corrections that is, corrections suppressed by one power of g relative to leading order. We argue that the still missing terms are small. The next-to-leading order corrections are large and bring eta/s down by more than a factor of 3 at physically relevant couplings. The perturbative expansion is problematic even at T similar or equal to 100 GeV. The largest next-to-leading order correction to eta/s arises from modifications to the (q) over cap parameter, which determines the rate of transverse momentum diffusion. We also explore quark number diffusion, and shear viscosity in pure-glue QCD and in QED.
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