Thermalization and isotropization in heavy-ion collisions

Abstract

I review our current understanding of the processes driving the thermalization and isotropization of the quark gluon plasma (QGP) created in ultrarelativistic heavy ion collisions (URHICs). I begin by discussing the phenomenological evidence in favor of the creation of a thermal but momentum-space anisotropic QGP in URHICs. I then discuss the degree of isotropization using viscous (dissipative) hydrodynamics, weak-coupling approaches to QGP dynamics, and strong-coupling approaches to QGP dynamics. Finally, I report on recent progress in the area of real-time non-abelian gauge field simulations and non-abelian Boltzmann-Vlasov-based hard-loop simulations.

14 pages, 4 figures; Invited review for Pramana

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Cited by in corpus (37)

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• The anisotropic non-equilibrium hydrodynamic attractor
• Holographic Anisotropic Background with Confinement-Deconfinement Phase Transition
• The non-equilibrium attractor for kinetic theory in relaxation time approximation
• Progress in the Glauber model at collider energies
• Holographic Anisotropic Model for Heavy Quarks in Anisotropic Hot Dense QGP with External Magnetic Field
• Holographic Anisotropic Model for Light Quarks with Confinement-Deconfinement Phase Transition
• Orientation Dependence of Confinement-Deconfinement Phase Transition in Anisotropic Media
• Color Instabilities in the Quark-Gluon Plasma
• Deviations of the Energy-Momentum Tensor from Equilibrium in the Initial State for Hydrodynamics from Transport Approaches
• Holographic Entanglement Entropy in Anisotropic Background with Confinement-Deconfinement Phase Transition
• Holographic model for light quarks in anisotropic hot dense QGP with external magnetic field
• Heavy quarkonium dynamics at next-to-leading order in the binding energy over temperature
• Dilepton production from the quark-gluon plasma using (3+1)-dimensional anisotropic dissipative hydrodynamics
• Analytic black branes in Lifshitz-like backgrounds and thermalization
• Holography for Heavy Ions Collisions at LHC and NICA
• Anisotropic hydrodynamics with a scalar collisional kernel
• Bulk viscous corrections to screening and damping in QCD at high temperatures
• Anisotropic Hydrodynamics: Motivation and Methodology
• A hydrodynamic approach to boost invariant free streaming
• QGP time formation in holographic shock waves model of heavy ion collisions
• Magnetic Catalysis in Holographic Model with Two Types of Anisotropy for Heavy Quarks
• Direct photons emission rate and electric conductivity in twice anisotropic QGP holographic model with first-order phase transition
• Heavy quarkonia in a bulk viscous medium
• Virtual photon polarization in ultrarelativistic heavy-ion collisions
• Primordial gravitational waves amplification from causal fluids
• Parton self-energies for general momentum-space anisotropy
• Drag and Diffusion of Heavy Quarks in a hot and anisotropic QCD medium
• Spectral functions of heavy quarkonia in a bulk-viscous quark gluon plasma
• Covariant formulation of gluon self-energy in presence of ellipsoidal anisotropy
• Collective modes of gluons in an anisotropic thermo-magnetic medium
• Note on stability and holographic subregion complexity
• The non-equilibrium attractor: Beyond hydrodynamics
• Holographic Anisotropic Background in 5D Einstien-Gauss-Bonnet Gravity
• The Extraordinary Glow
• Hybrid thermalization in the large $N$ limit
• The Static Heavy Quark-Antiquark Potential within String Theory in Arbitrary Stationary Backgrounds