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Nuclear Theory

arXiv:2508.05292 (nucl-th)
[Submitted on 7 Aug 2025]

Title:A Resummed Hydrodynamic Description of Relativistic Heavy-ion Collisions

Authors:Cheng Chiu, Gabriel Denicol, Matthew Luzum, Chun Shen
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Abstract:We introduce a resummed hydrodynamic scheme for evolving the viscous stress tensors in relativistic viscous hydrodynamics, based on which the necessary non-linear causality conditions can be imposed. When the magnitudes of the shear and bulk viscous stress tensors are small relative to the ideal part energy-momentum tensor, this new resummed scheme reduces to the standard second-order relativistic hydrodynamic theories. Nontrivial nonlinear corrections from high-order gradient terms retain the sizes of shear and bulk viscous stress tensors within tunable maximum allowed values. We perform event-by-event simulations for Pb+Pb and p+Pb collisions at 5.02 TeV to quantify the theoretical uncertainties from this resummed scheme on final-state flow observables.
Comments: 10 pages, 7 figures
Subjects: Nuclear Theory (nucl-th); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:2508.05292 [nucl-th]
  (or arXiv:2508.05292v1 [nucl-th] for this version)
  https://doi.org/10.48550/arXiv.2508.05292

Submission history

From: Chun Shen [view email]
[v1] Thu, 7 Aug 2025 11:45:38 UTC (1,998 KB)
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