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Opacity dependence of transverse flow, pre-equilibrium and applicability of hydrodynamics in heavy-ion collisions

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arxiv 2211.14379 v2 pith:COYJ3P7V submitted 2022-11-25 hep-ph nucl-th

Victor E. Ambrus , S. Schlichting , C. Werthmann This is my paper
classification hep-phnucl-th
keywords collisionsdependenceflowheavy-ionhydrodynamickineticopacityapplicability
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We evaluate the full opacity dependence of collective flow in high-energy heavy-ion collisions within a microscopic kinetic description based on the Boltzmann equation in the conformal relaxation time approximation. By comparing kinetic theory calculations to hydrodynamic and hybrid simulations for an average initial state, we point out shortcomings and inaccuracies of hydrodynamic models and present modified simulation setups to improve them.

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Cited by 4 Pith papers

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

  1. Imaging non-hydrodynamic modes with jet wakes

    hep-ph 2026-07 conditional novelty 7.0 of 10

    In the long-wavelength limit, jet-wake angular moments with ℓ≥3 vanish in hydrodynamics and directly image the non-hydrodynamic relaxation spectrum of the medium.

  2. Extended applicability domain of viscous anisotropic hydrodynamics in (2+1)-D Bjorken flow with transverse expansion

    nucl-th 2025-09 unverdicted novelty 5.0 of 10

    VAH simulations in (2+1)D Bjorken flow with transverse expansion show an extended applicability domain over standard viscous hydrodynamics when compared to relaxation-time approximation kinetic theory.

  3. Collective effects in O-O and Ne-Ne collisions at $\sqrt{s_{\mathrm{NN}}}$=5.36 TeV from a hybrid approach

    nucl-th 2025-09 unverdicted novelty 3.0 of 10

    Predictions for collective flow in O-O collisions at 5.36 TeV are generated with SMASH-vHLLE hybrid, pure SMASH, and Angantyr models to probe the onset of QGP formation in small systems.

  4. Few is different: deciphering many-body dynamics in mesoscopic quantum gases

    cond-mat.quant-gas 2025-09 unverdicted novelty 3.0 of 10

    A workshop report mapping the size, equilibrium, and interaction frontiers of hydrodynamic behavior in mesoscopic quantum systems, connecting few-atom Fermi gases and high-energy small collision systems.

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