Interplay of shear and bulk viscosity in generating flow in heavy-ion collisions

Abstract

We perform viscous hydrodynamic calculations in 2+1 dimensions to investigate the influence of bulk viscosity on the viscous suppression of elliptic flow in non-central heavy-ion collisions at RHIC energies. Bulk and shear viscous effects on the evolution of radial and elliptic flow are studied with different model assumptions for the transport coefficients. We find that the temperature dependence of the relaxation time for the bulk viscous pressure, especially its critical slowing down near the quark-hadron phase transition at T_c, partially offsets effects from the strong growth of the bulk viscosity itself near T_c, and that even small values of the specific shear viscosity eta/s of the fireball matter can be extracted without large uncertainties from poorly controlled bulk viscous effects.

13 pages, 7 figures, 1 table. Submitted to Physical Review C. v2: corrected typos in several entries in Table I

References in corpus (41)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Nonlinear Fluid Dynamics from Gravity
• Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
• Relativistic viscous hydrodynamics, conformal invariance, and holography
• On the Strongly-Interacting Low-Viscosity Matter Created in Relativistic Nuclear Collisions
• A calculation of the bulk viscosity in SU(3) gluodynamics
• Suppression of elliptic flow in a minimally viscous quark-gluon plasma
• Thermodynamics and bulk viscosity of approximate black hole duals to finite temperature quantum chromodynamics
• Multiplicity scaling in ideal and viscous hydrodynamics
• Dissipative Hydrodynamics and Heavy Ion Collisions
• Has the QCD Critical Point been Signaled by Observations at RHIC ?
• Bulk viscosity of gauge theory plasma at strong coupling
• The centrality dependence of elliptic flow, the hydrodynamic limit, and the viscosity of hot QCD
• Effects of fluctuations on the initial eccentricity from the Color Glass Condensate in heavy ion collisions
• Bulk viscosity of QCD matter near the critical temperature
• Perturbative QCD Calculations of Elliptic Flow and Shear Viscosity in Au+Au Collisions at $\sqrt{s_{NN}}=200$ GeV
• The eccentricity in heavy-ion collisions from Color Glass Condensate initial conditions
• Second order hydrodynamic coefficients from kinetic theory
• Measurement of the Entropy and Critical Temperature of a Strongly Interacting Fermi Gas
• The applicability of causal dissipative hydrodynamics to relativistic heavy ion collisions
• Thermal Transport and Drag Force in Improved Holographic QCD
• Origins of Bulk Viscosity at RHIC
• The Shear Viscosity to Entropy Density Ratio of Trapped Fermions in the Unitarity Limit
• Relativistic Dynamics of Non-ideal Fluids: Viscous and heat-conducting fluids I. General Aspects and 3+1 Formulation for Nuclear Collisions
• Bulk Viscosity driven clusterization of quark-gluon plasma and early freeze-out in relativistic heavy-ion collisions
• Elliptic flow of gluon matter in ultrarelativistic heavy-ion collisions
• Instability of Boost-invariant hydrodynamics with a QCD inspired bulk viscosity
• Causal Viscous Hydrodynamics for Central Heavy-Ion Collisions II: Meson Spectra and HBT Radii
• Dissipative effects from transport and viscous hydrodynamics
• Transport properties of the quark-gluon plasma from lattice QCD
• Is a gas of strongly interacting atomic fermions a nearly perfect fluid?
• Constraining relativistic viscous hydrodynamical evolution
• Chemical freeze-out temperature in hydrodynamical description of Au+Au collisions at sqrt(s_NN) = 200 GeV
• Entropy production in high-energy heavy-ion collisions and the correlation of shear viscosity and thermalization time
• Stress Tensor and Bulk Viscosity in Relativistic Nuclear Collisions
• Relaxation time of non-conformal plasma
• Viscosity from elliptic flow: the path to precision
• Viscous hydrodynamics with bulk viscosity -- uncertainties from relaxation time and initial conditions
• Formulating Viscous Hydrodynamics for Large Velocity Gradients
• Is an Ultra-Cold Strongly Interacting Fermi Gas a Perfect Fluid?
• Bulk viscosity effects on elliptic flow

Cited by in corpus (104)

• Collective flow and viscosity in relativistic heavy-ion collisions
• Hydrodynamic Modeling of Heavy-Ion Collisions
• Applying Bayesian parameter estimation to relativistic heavy-ion collisions: simultaneous characterization of the initial state and quark-gluon plasma medium
• 200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
• The importance of the bulk viscosity of QCD in ultrarelativistic heavy-ion collisions
• Triangular flow in hydrodynamics and transport theory
• Event-by-event fluctuations in perturbative QCD + saturation + hydro model: pinning down QCD matter shear viscosity in ultrarelativistic heavy-ion collisions
• Quasi-Particle Theory of Shear and Bulk Viscosities of Hadronic Matter
• Translation of collision geometry fluctuations into momentum anisotropies in relativistic heavy-ion collisions
• Bulk and shear viscosities of matter created in relativistic heavy-ion collisions
• Event-by-event hydrodynamics and elliptic flow from fluctuating initial state
• Transport Coefficients of Bulk Viscous Pressure in the 14-moment approximation
• Bulk Viscosity Effects in Event-by-Event Relativistic Hydrodynamics
• Viscous QCD matter in a hybrid hydrodynamic+Boltzmann approach
• Particle spectra in Pb-Pb collisions at 2.76 TeV
• Systematic parameter study of hadron spectra and elliptic flow from viscous hydrodynamic simulations of Au+Au collisions at sqrt(s_NN) = 200 GeV
• Determining Fundamental Properties of Matter Created in Ultrarelativistic Heavy-Ion Collisions
• Bulk viscosity, particle spectra and flow in heavy-ion collisions
• Elliptic flow in 200 A GeV Au+Au collisions and 2.76 A TeV Pb+Pb collisions: insights from viscous hydrodynamics + hadron cascade hybrid model
• Hadron spectra and elliptic flow for 200 A GeV Au+Au collisions from viscous hydrodynamics coupled to a Boltzmann cascade
• Bulk viscosity-driven suppression of shear viscosity effects on the flow harmonics at RHIC
• Relativistic viscous hydrodynamics for heavy-ion collisions with ECHO-QGP
• Relativistic hydrodynamics in heavy-ion collisions: general aspects and recent developments
• Shear and bulk viscosities of the gluon plasma in a quasiparticle description
• Effects of bulk viscosity and hadronic rescattering in heavy ion collisions at RHIC and LHC
• Bulk Viscosity and Cavitation in Boost-Invariant Hydrodynamic Expansion
• Evolution of the differential transverse momentum correlation function with centrality in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Spectra and elliptic flow for identified hadrons in 2.76 A TeV Pb+Pb collisions
• (3+1)-dimensional dissipative relativistic fluid dynamics at non-zero net baryon density
• Shear-bulk coupling in nonconformal hydrodynamics
• Divergence-type 2+1 dissipative hydrodynamics applied to heavy-ion collisions
• Towards the Little Bang Standard Model
• Hydrodynamics at RHIC and LHC: What have we learned?
• Ratio of bulk to shear viscosity in a quasigluon plasma: from weak to strong coupling
• Emergence of microphysical bulk viscosity in binary neutron star post-merger dynamics
• Bulk and shear viscosities of hot and dense hadron gas
• Relativistic second-order dissipative hydrodynamics at finite chemical potential
• The Bulk Channel in Thermal Gauge Theories
• Paths to equilibrium in non-conformal collisions
• The Bulk Viscosity of a Pion Gas
• Phenomenological Consequences of Enhanced Bulk Viscosity Near the QCD Critical Point
• Estimating transport coefficients in hot and dense quark matter
• Event shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at $\sqrt{s_\rm{NN}}=2.76$ TeV
• Influence of temperature dependent shear viscosity on elliptic flow at back- and forward rapidities in ultrarelativistic heavy-ion collisions
• QGP viscosity at RHIC and the LHC - a 2012 status report
• Complete relativistic second-order dissipative hydrodynamics from the entropy principle
• High order flow harmonics of identified hadrons in 2.76 A TeV Pb+Pb collisions
• Probing neutron-star matter in the lab: similarities and differences between binary mergers and heavy-ion collisions
• A systematic comparison of jet quenching in different fluid-dynamical models
• Electromagnetic radiation as a probe of the initial state and of viscous dynamics in relativistic nuclear collisions
• Anisotropic flow in transport+hydrodynamics hybrid approaches
• The nucleon thermal width due to pion-baryon loops and its contribution in Shear viscosity
• Bayesian parameter estimation for relativistic heavy-ion collisions
• Investigation of Heat Conductivity in Relativistic Systems using a Partonic Cascade
• Impact of quark quasiparticles on transport coefficients in hot QCD
• Electrical and thermal conductivities of hot and dense hadron gas
• On the bulk viscosity of anisotropically expanding hot QCD plasma
• Shear viscosity of hadrons with K-matrix cross sections
• Transport properties of anisotropically expanding quark-gluon plasma within a quasi-particle model
• Onset of cavitation in the quark-gluon plasma
• Dynamical exploring the QCD matter at finite temperatures and densities-a short review
• Exploring the influence of bulk viscosity of QCD on dilepton tomography
• (3+1)-dimensional anisotropic fluid dynamics with a lattice QCD equation of state
• Cavitation in holographic sQGP
• Hydrodynamic Modeling and the QGP Shear Viscosity
• Viscous hydrodynamics with bulk viscosity -- uncertainties from relaxation time and initial conditions
• Momentum and its affiliated transport coefficients for a hot QCD matter in a strong magnetic field
• Flow in heavy-ion collisions - Theory Perspective
• Viscous modifications to quark and gluon distribution functions in quark-gluon plasma medium
• The Skinny on Bulk Viscosity and Cavitation in Heavy Ion Collisions
• An estimate of the bulk viscosity of the hadronic medium
• Introduction to Hydrodynamics
• Bulk viscosity for pion and nucleon thermal fluctuation in the hadron resonance gas model
• Temperature dependence of transport coefficients of QCD in high-energy heavy-ion collisions
• Dissipative hydrodynamics coupled to chiral fields
• Hadron resonance gas with repulsive mean field interaction: Thermodynamics and transport properties
• A comparative study on two different expressions of Bulk viscosity in the PNJL model
• Impact of momentum anisotropy and turbulent chromo-fields on thermal particle production in quark-gluon plasma medium
• Effect of the GUP on the Entropy, Speed of Sound, and Bulk to Shear Viscosity Ratio of an ideal QGP
• Off-equilibrium corrections to energy and conserved charge densities in the relativistic fluid in heavy-ion collisions
• Viscosity, non-conformal equation of state and sound velocity in Landau hydrodynamics
• Bottomonium suppression in PbPb collision at energies available at the CERN large hadron collider
• Effect of bulk viscosity on interferometry correlations in ultrarelativistic heavy-ion collisions
• Thermal noise in a boost-invariant matter expansion in relativistic heavy-ion collisions
• Spectral functions of heavy quarkonia in a bulk-viscous quark gluon plasma
• Direct Photons in Hydrodynamic Modeling of Relativistic Nuclear Collisions
• Estimating transport coefficients of interacting pion gas with K-matrix cross sections
• Characterizing radial flow fluctuations in relativistic heavy-ion collisions at top RHIC and LHC energies
• Anisotropic Flow and Jet Quenching in Relativistic Nuclear Collisions
• Collective flow and hydrodynamics in large and small systems at the LHC
• Flow and vorticity with varying chemical potential in relativistic heavy ion collisions
• Two-pion interferometry for viscous hydrodynamic sources
• Feeding of the elliptic flow by hard partons
• Thermal photon production in Au+Au collisions: viscous corrections in two different hydrodynamic formalisms
• Viscosities of the quasigluon plasma
• Pion transverse-momentum spectrum, elliptic flow, and Hanbury-Brown-Twiss interferometry in a viscous granular source model
• Projecting the likely importance of weak-interaction-driven bulk viscosity in neutron star mergers
• Formulation of relativistic dissipative fluid dynamics and its applications in heavy-ion collisions
• Production of thermal photons in viscous fluid dynamics with temperature-dependent shear viscosity
• Extraction of the Specific Shear Viscosity of Hot Hadron Gas
• Far-from-equilibrium hydrodynamic simulations of ultrarelativistic nuclear collisions
• Causal dissipative hydrodynamics for heavy ion collisions
• Extending Israel-Stewart theory: Causal bulk viscosity at large gradients
• On the Perturbative Evaluation of Thermal Green's Functions in the Bulk and Shear Channels of Yang-Mills Theory