Crucible Computing Group
A resummed hydrodynamic description of relativistic heavy-ion collisions
Abstract
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.
Cite this paper
@article{chiu2026resummed,
title = {A resummed hydrodynamic description of relativistic heavy-ion collisions},
author = {Cheng Chiu and Gabriel S Denicol and Matthew Luzum and Chun Shen},
year = {2026},
journal = {Journal of Physics G: Nuclear and Particle Physics},
doi = {10.1088/1361-6471/aea878},
url = {https://crucible.eecs.umich.edu/papers/a-resummed-hydrodynamic-description-of-relativistic-heavy-ion-collisions-31}
}