Limiting attractors in heavy-ion collisions -- the interplay between bottom-up and hydrodynamic attractors

2024/01/17 by Boguslavski, Kirill, Kurkela, Aleksi, Lappi, Tuomas +2
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2401.09088

Abstract

In this contribution to the Quark Matter 2023 proceedings, we study the hydrodynamization process in heavy-ion collisions using QCD kinetic theory and introduce the new concept of limiting attractors. They are defined via an extrapolation of observables to vanishing and infinite couplings. We find that the pressure ratio exhibits both a hydrodynamic and a bottom-up limiting attractor, while the ratios of hard probes transport coefficients q^zz/ q^yy and κ_T/κ_z are better described in terms of the new bottom-up limiting attractor.

Related

• Limiting attractors in heavy-ion collisions
• Attractor of hydrodynamic attractors
• Recent development of hydrodynamic modeling in heavy-ion collisions
• Connecting Pre-Thermal and Hydrodynamizing Attractors With Adiabatic Hydrodynamization
• Hydrodynamization and resummed viscous hydrodynamics