Hydrodynamical attractor and thermal particle production in heavy-ion collision

Abstract

Study of thermal particle production is crucial to understand the space-time evolution of the fireball produced in high energy heavy-ion collisions. We consider thermal particle production within the framework of relativistic viscous hydrodynamics and employ recently obtained analytical solutions of higher-order viscous hydrodynamics with longitudinal Bjorken expansion to calculate the spectra of dileptons and photons. Using these analytical solutions, we constrain the allowed initial states by demanding positivity and reality of energy density throughout the evolution. Further, we compute thermal particle spectra and study the particle yield in context of hydrodynamic attractors. We find that, of all allowed solutions, the evolution corresponding to attractor solution leads to maximum production of thermal particles.

arXiv comment13 pages, 10 figures

References in corpus (44)

• Derivation of transient relativistic fluid dynamics from the Boltzmann equation
• Why does the Quark-Gluon Plasma at RHIC behave as a nearly ideal fluid ?
• New theories of relativistic hydrodynamics in the LHC era
• Hydrodynamics Beyond the Gradient Expansion: Resurgence and Resummation
• Dissipative Hydrodynamics and Heavy Ion Collisions
• Fluid Dynamics far from Local Equilibrium
• Hydrodynamic gradient expansion in gauge theory plasmas
• Nonlinear causality of general first-order relativistic viscous hydrodynamics
• The anisotropic non-equilibrium hydrodynamic attractor
• Relativistic third-order dissipative fluid dynamics from kinetic theory
• The complex life of hydrodynamic modes
• Hydrodynamization in kinetic theory: Transient modes and the gradient expansion
• Relativistic dissipative hydrodynamics from kinetic theory with relaxation time approximation
• On the convergence of the gradient expansion in hydrodynamics
• Fluid dynamics of out of equilibrium boost invariant plasmas
• Far-from-equilibrium attractors and nonlinear dynamical systems approach to the Gubser flow
• Constructing higher-order hydrodynamics: The third order
• On the hydrodynamic attractor of Yang-Mills plasma
• The non-equilibrium attractor for kinetic theory in relaxation time approximation
• Hydrodynamic attractors, initial state energy and particle production in relativistic nuclear collisions
• Resurgence in Extended Hydrodynamics
• Hydrodynamics, resurgence and trans-asymptotics
• Analytical attractor and the divergence of the slow-roll expansion in relativistic hydrodynamics
• How does relativistic kinetic theory remember about initial conditions?
• Exact hydrodynamic attractor of an ultrarelativistic gas of hard spheres
• Exact solutions and attractors of higher-order viscous fluid dynamics for Bjorken flow
• Hydrodynamic attractor and the fate of perturbative expansions in Gubser flow
• Dynamical systems and nonlinear transient rheology of the far-from-equilibrium Bjorken flow
• Photons as a viscometer of heavy ion collisions
• Relativistic viscous hydrodynamics for heavy-ion collisions: A comparison between the Chapman-Enskog and Grad methods
• Non-perturbative rheological behavior of a far-from-equilibrium expanding plasma
• Gradient expansion for anisotropic hydrodynamics
• Onset of hydrodynamics for a quark-gluon plasma from the evolution of moments of distribution functions
• The large proper-time expansion of Yang-Mills plasma as a resurgent transseries
• Intermediate mass dileptons as pre-equilibrium probes in heavy ion collisions
• On higher order and anisotropic hydrodynamics for Bjorken and Gubser flows
• Analytical attractor for Bjorken expansion
• Thermal photons in QGP and non-ideal effects
• Cavitation and thermal dilepton production in QGP
• Equivalence between first-order causal and stable hydrodynamics and Israel-Stewart theory for boost-invariant systems with a constant relaxation time
• Hydro overview
• Resummed hydrodynamic expansion for a plasma of particles interacting with fields
• Impact of momentum anisotropy and turbulent chromo-fields on thermal particle production in quark-gluon plasma medium
• Thermal dilepton production in collisional hot QCD medium in the presence of chromo-turbulent fields

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