The non-equilibrium attractor: Beyond hydrodynamics
arXiv:1904.00413 · doi:10.5506/APhysPolB.50.1243
Abstract
The quark-gluon plasma created in heavy-ion collisions is not in local thermal equilibrium at early times. Despite this, dissipative hydrodynamics describes the evolution of the energy-momentum tensor quite well after only roughly 0.5 - 1 fm/c. This can be understood using the concept of a non-equilibrium dynamical attractor. The attractor is a uniquely identifiable solution to the dynamical equations to which all solutions are drawn as the system evolves. Once solutions collapse onto the non-equilibrium attractor they are ``pseudo-thermalized'' in the sense that they have lost information about the precise initial conditions used, but are not yet in exact local thermal equilibrium. Here I review recent work which demonstrates that there exists a non-equilibrium attractor in full kinetic theory models which goes beyond the usual low-order momentum moments considered in hydrodynamical treatments.
8 pages, 2 figures; Proceedings contribution for Epiphany 2019, Krakow, 8-11 Jan 2019
References in corpus (46)
- Green's Functions in the Color Field of a Large Nucleus
- Saturation in Diffractive Deep Inelastic Scattering
- Horizon formation and far-from-equilibrium isotropization in supersymmetric Yang-Mills plasma
- Universality of Unintegrated Gluon Distributions at small x
- New theories of relativistic hydrodynamics in the LHC era
- Hydrodynamics Beyond the Gradient Expansion: Resurgence and Resummation
- The Color Glass Condensate and hadron production in the forward region
- Isotropization and hydrodynamization in weakly coupled heavy-ion collisions
- Fluid Dynamics far from Local Equilibrium
- Inclusive Hadron Productions in pA Collisions
- Testing viscous and anisotropic hydrodynamics in an exactly solvable case
- kt-factorization for Hard Processes in Nuclei
- One-loop Factorization for Inclusive Hadron Production in Collisions in the Saturation Formalism
- Distribution of linearly polarized gluons inside a large nucleus
- On the linearly polarized gluon distributions in the color dipole model
- The anisotropic non-equilibrium hydrodynamic attractor
- Anisotropic Hydrodynamics for Rapidly Expanding Systems
- Improved TMD factorization for forward dijet production in dilute-dense hadronic collisions
- The distribution of linearly polarized gluons and elliptic azimuthal anisotropy in DIS dijet production at high energy
- Single-inclusive particle production in proton-nucleus collisions at next-to-leading order in the hybrid formalism
- Forward di-jet production in p+Pb collisions in the small-x improved TMD factorization framework
- Particle Production at High Energy and Large Transverse Momentum - "The Hybrid Formalism" Revisited
- Far-from-equilibrium attractors and nonlinear dynamical systems approach to the Gubser flow
- Asymmetries in Heavy Quark Pair and Dijet Production at an EIC
- Transverse-momentum-dependent gluon distributions from JIMWLK evolution
- Holographic isotropization linearized
- The non-equilibrium attractor for kinetic theory in relaxation time approximation
- CGC factorization for forward particle production in proton-nucleus collisions at next-to-leading order
- Linearly-polarized small-x gluons in forward heavy-quark pair production
- Chemical Equilibration in Hadronic Collisions
- Chemical Equilibration in Weakly Coupled QCD
- 3+1d quasiparticle anisotropic hydrodynamics for ultrarelativistic heavy-ion collisions
- Single inclusive forward hadron production at next-to-leading order
- Implementing the exact kinematical constraint in the saturation formalism
- On the implementation of NLO high energy factorization in single inclusive forward hadron production
- Thermalization and isotropization in heavy-ion collisions
- Azimuthal asymmetries for quark pair production in pA collisions
- Matching Collinear and Small-x Factorization Calculations for Inclusive Hadron Production in pA Collisions
- Probing the Weizsäcker-Williams gluon Wigner distribution in pp collisions
- Hydrodynamic attractor and the fate of perturbative expansions in Gubser flow
- Dynamical systems and nonlinear transient rheology of the far-from-equilibrium Bjorken flow
- Suppression of maximal linear gluon polarization in angular asymmetries
- Non-perturbative rheological behavior of a far-from-equilibrium expanding plasma
- Heavy quarks in proton-nucleus collisions - the hybrid formalism
- Introduction to Hydrodynamics
- Anisotropic hydrodynamics with number-conserving kernels