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

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arxiv 1805.02663 v2 pith:ZUROYUJD submitted 2018-05-07 hep-ph nucl-th

Jacopo Ghiglieri , Guy D. Moore , Derek Teaney This is my paper · ORCID
classification hep-phnucl-th
keywords boundsdescriptionkineticsecond-orderstronglytheoryaboveapply
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We compute the hydrodynamic relaxation times $\tau_\pi$ and $\tau_j$ 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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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The Lorentzian geometry of relaxation

    nucl-th 2026-07 accept novelty 8.0 of 10

    Causality forces purely relaxational dispersion relations to follow spacelike trajectories on the Lorentzian {iω,ik} plane, producing universal bounds on diffusivity, viscosity, time-dilation deviations, and hydrodyna...

  2. Relativistic Viscous Hydrodynamics in the Density Frame: Numerical Tests and Comparisons

    nucl-th 2024-12 conditional novelty 6.0 of 10

    In 1+1D tests, Density Frame hydrodynamics matches QCD kinetic theory within the hydrodynamic regime and remains stable where BDNK and some second-order schemes develop oscillations or fail.

  3. Minijet thermalization and jet transport coefficients in QCD kinetic theory

    hep-ph 2025-10 unverdicted novelty 5.0 of 10

    Minijet thermalization time in a thermal gluon plasma scales with the jet quenching parameter q-hat once recoiling medium contributions are added to standard transport coefficient definitions.

  4. The equation of state for neutron stars

    nucl-th 2026-07 unverdicted

    A textbook-style review of the neutron-star equation of state covering the models, experimental and observational constraints, and open questions, with no new result claimed or derived.

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