Hydrodynamization in hybrid Bjorken flow attractors
arXiv:2211.05480 · doi:10.1007/JHEP04(2024)041
Abstract
Hybrid fluid models, consisting of two sectors with more weakly and more strongly self-interacting degrees of freedom coupled consistently as in the semi-holographic framework, have been shown to exhibit an attractor surface for Bjorken flow. Retaining only the simple viscid fluid descriptions of both sectors, we find that, on the attractor surface, the hydrodynamization times of both subsectors decrease with increasing total energy density at the respective point of hydrodynamization following a conformal scaling, reach their minimum values, and subsequently rise rapidly. The minimum values are obtained when the respective energy densities are of the order of the inverse of the dimensionful inter-system coupling. Restricting to attractor curves which can be matched to glasma models at a time set by the saturation scale for both - and Pb-Pb collisions, we find that the more weakly coupled sector hydrodynamizes much later, and the strongly coupled sector hydrodynamizes earlier in - collisions, since the total energy densities at the respective hydrodynamization times of these sectors fall inside and outside of the conformal window. This holds true also for phenomenologically relevant solutions that are significantly away from the attractor surface at the time we match to glasma models.
arXiv comment50 pages, 19 figures. Version to appear in JHEP; Section 4 improved
References in corpus (42)
- Collective flow and viscosity in relativistic heavy-ion collisions
- The Color Glass Condensate
- Heavy Ion Collisions: The Big Picture, and the Big Questions
- Relativistic viscous hydrodynamics, conformal invariance, and holography
- Bottom-up thermalization in heavy ion collisions
- Lectures on hydrodynamic fluctuations in relativistic theories
- Effective Kinetic Theory for High Temperature Gauge Theories
- Holography and colliding gravitational shock waves in asymptotically AdS_5 spacetime
- New theories of relativistic hydrodynamics in the LHC era
- The characteristics of thermalization of boost-invariant plasma from holography
- Hydrodynamics Beyond the Gradient Expansion: Resurgence and Resummation
- Isotropization and hydrodynamization in weakly coupled heavy-ion collisions
- Boost invariant flow, black hole formation, and far-from-equilibrium dynamics in N = 4 supersymmetric Yang-Mills theory
- QCD thermalization: Ab initio approaches and interdisciplinary connections
- Fluid Dynamics far from Local Equilibrium
- Hydrodynamic gradient expansion in gauge theory plasmas
- Semi-Holographic Fermi Liquids
- Nuclear enhancement of universal dynamics of high parton densities
- Experimental overview on small collision systems at the LHC
- What attracts to attractors?
- Hydrodynamic attractors, initial state energy and particle production in relativistic nuclear collisions
- Relativistic Hydrodynamic Attractors with Broken Symmetries: Non-Conformal and Non-Homogeneous
- Coupling hydrodynamics to nonequilibrium degrees of freedom in strongly interacting quark-gluon plasma
- Analytical attractor and the divergence of the slow-roll expansion in relativistic hydrodynamics
- Colliding shock waves and hydrodynamics in small systems
- Hydrodynamic attractors in heavy ion collisions: a review
- Hydrodynamic attractor and the fate of perturbative expansions in Gubser flow
- Paths to equilibrium in non-conformal collisions
- Resurgence and Hydrodynamic Attractors in Gauss-Bonnet Holography
- Holographic Collisions in Non-conformal Theories
- Intermediate mass dileptons as pre-equilibrium probes in heavy ion collisions
- Hydrodynamic attractors in phase space
- Holography, Hydrodynamization and Heavy-Ion Collisions
- A semi-holographic model for heavy-ion collisions
- Phenomenological characterisation of semi-holographic non-Fermi liquids
- Illustrated study of the semi-holographic non-perturbative framework
- Hybrid Fluid Models from Mutual Effective Metric Couplings
- Time evolution of a toy semiholographic glasma
- Hydrodynamic attractor of a hybrid viscous fluid in Bjorken flow
- Quasinormal modes of a semi-holographic black brane and thermalization
- Hydrodynamic attractor and novel fixed points in superfluid Bjorken flow
- Boost-invariant superfluid flows