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arXiv · 1805.02663

Second-order Hydrodynamics in Next-to-Leading-Order QCD

Jacopo Ghiglieri·Guy D. Moore·Derek Teaney
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Abstract

We compute the hydrodynamic relaxation times $τ_π$ and $τ_j$ for hot QCD at next-to-leading order in the coupling with kinetic theory. We show that certain dimensionless ratios of second-order to first-order transport coefficients obey bounds which apply whenever a kinetic theory description is possible; the computed values lie somewhat above these bounds. Strongly coupled theories with holographic duals strongly violate these bounds, highlighting their distance from a quasiparticle description.

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Jacopo Ghiglieri, Guy D. Moore, Derek Teaney. 2018-07-27. Second-order Hydrodynamics in Next-to-Leading-Order QCD. https://doi.org/10.1103/physrevlett.121.052302

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