Strong-coupling effects in a plasma of confining gluons

Wojciech Florkowski; Radoslaw Ryblewski; Nan Su; Konrad Tywoniuk

doi:10.1016/j.nuclphysa.2016.01.063

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arXiv · 1512.06402

Strong-coupling effects in a plasma of confining gluons

Wojciech Florkowski·Radoslaw Ryblewski·Nan Su·Konrad Tywoniuk

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Abstract

The plasma consisting of confining gluons resulting from the Gribov quantization of the SU(3) Yang-Mills theory is studied using non-equilibrium fluid dynamical framework. Exploiting the Bjorken symmetry and using linear response theory a general analytic expressions for the bulk and shear viscosity coefficients are derived. It is found that the considered system exhibits a number of properties similar to the strongly-coupled theories, where the conformality is explicitly broken. In particular, it is shown that, in the large temperature limit, bulk to shear viscosity ratio, scales linearly with the difference $1/3 - c_s^2$, where $c_s$ is the speed of sound. Results obtained from the analysis are in line with the interpretation of the quark-gluon plasma as an almost perfect fluid.

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Wojciech Florkowski, Radoslaw Ryblewski, Nan Su, Konrad Tywoniuk. 2015-12-20. Strong-coupling effects in a plasma of confining gluons. https://doi.org/10.1016/j.nuclphysa.2016.01.063

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