Transport coefficients in Yang-Mills theory and QCD.

We calculate the shear-viscosity-over-entropy-density ratio η/s in Yang-Mills theory from the Kubo formula using an exact diagrammatic representation in terms of full propagators and vertices using gluon spectral functions as external input. We provide an analytic fit formula for the temperature dependence of η/s over the whole temperature range from a glueball resonance gas at low temperatures, to a high-temperature regime consistent with perturbative results. Subsequently, we provide a first estimate for η/s in QCD.

• Publication year

  2014

• Venue

  Physical Review Letters

• Publication date

  2014-11-28

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/PhysRevLett.115.112002arXiv 1411.7986PMID 26406822
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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