Far-off-equilibrium expansion trajectories in the QCD phase diagram
arXiv:2209.10483 · doi:10.1103/PhysRevC.107.044905
Abstract
We consider the hydrodynamic evolution of a quark-gluon gas with non-zero quark masses and net baryon number in its phase diagram. For far-off-equilibrium initial conditions the expansion trajectories appear to violate simple rules based on the second law of thermodynamics that were previously established for ideal or weakly dissipative fluids. For Bjorken flow we present a detailed analysis within kinetic theory that provides a full microscopic understanding of these macroscopic phenomena and establishes their thermodynamic consistency. We point out that, for certain far-off-equilibrium initial conditions, the well-known phenomenon of "viscous heating" turns into "viscous cooling" where, driven by dissipative effects, the temperature decreases faster than in adiabatic expansion.
arXiv comment25 pages, 14 figures (manuscript now in PRC format, added references)
References in corpus (56)
- The order of the quantum chromodynamics transition predicted by the standard model of particle physics
- The chiral and deconfinement aspects of the QCD transition
- Signatures of the Tricritical Point in QCD
- The QCD equation of state with dynamical quarks
- Event-by-Event Fluctuations in Heavy Ion Collisions and the QCD Critical Point
- Heavy Ion Collisions: The Big Picture, and the Big Questions
- Non-Gaussian fluctuations near the QCD critical point
- Bulk Properties of the Medium Produced in Relativistic Heavy-Ion Collisions from the Beam Energy Scan Program
- Derivation of transient relativistic fluid dynamics from the Boltzmann equation
- Equation of state and QCD transition at finite temperature
- New Developments in Relativistic Viscous Hydrodynamics
- Collective Modes of an Anisotropic Quark-Gluon Plasma
- Mapping the Phases of Quantum Chromodynamics with Beam Energy Scan
- On the sign of kurtosis near the QCD critical point
- Search for the QCD Critical Point with Fluctuations of Conserved Quantities in Relativistic Heavy-Ion Collisions at RHIC : An Overview
- Hydrodynamics Beyond the Gradient Expansion: Resurgence and Resummation
- Causal Theories of Dissipative Relativistic Fluid Dynamics for Nuclear Collisions
- Fluid Dynamics far from Local Equilibrium
- Hydro+: hydrodynamics with parametric slowing down and fluctuations near the critical point
- Testing viscous and anisotropic hydrodynamics in an exactly solvable case
- Transport Coefficients of Bulk Viscous Pressure in the 14-moment approximation
- Equation of State, Radial Flow and Freeze-out in High Energy Heavy Ion Collisions
- Real time evolution of non-Gaussian cumulants in the QCD critical regime
- Relativistic dissipative hydrodynamics from kinetic theory with relaxation time approximation
- Nonequilibrium chiral fluid dynamics including dissipation and noise
- Transport coefficients for bulk viscous evolution in the relaxation time approximation
- What attracts to attractors?
- Far-from-equilibrium attractors and nonlinear dynamical systems approach to the Gubser flow
- Diffusive dynamics of critical fluctuations near the QCD critical point
- Relativistic (Lattice) Boltzmann Equation with Non-Ideal Equation of State
- Novel Relaxation Time Approximation to the Relativistic Boltzmann Equation
- (3+1)-Dimensional Hydrodynamic Expansion with a Critical Point from Realistic Initial Conditions
- Exact solution of the (0+1)-dimensional Boltzmann equation for a massive gas
- Relativistic Hydrodynamic Attractors with Broken Symmetries: Non-Conformal and Non-Homogeneous
- Proton number fluctuation as a signal of the QCD critical end-point
- Dynamical net-proton fluctuations near a QCD critical point
- Shear-bulk coupling in nonconformal hydrodynamics
- Exact solutions and attractors of higher-order viscous fluid dynamics for Bjorken flow
- Relativistic third-order viscous corrections to the entropy four-current from kinetic theory
- Far-from-equilibrium search for the QCD critical point
- Relativistic second-order dissipative hydrodynamics at finite chemical potential
- Equilibration and relaxation times at the chiral phase transition including reheating
- Hydrodynamic Fluctuations in Relativistic Heavy-Ion Collisions
- Coupled kinetic equations for quarks and gluons in the relaxation time approximation
- Non-conformal attractor in boost-invariant plasmas
- Studying QGP with flow: A theory overview
- Second order viscous corrections to the harmonic spectrum in heavy ion collisions
- On non-conformal kinetic theory and hydrodynamics for Bjorken flow
- On higher order and anisotropic hydrodynamics for Bjorken and Gubser flows
- Baryon transport and the QCD critical point
- Extended relaxation time approximation and relativistic dissipative hydrodynamics
- Exact solution for the non-equilibrium attractor in number-conserving relaxation time approximation
- Critical lensing and kurtosis near a critical point in the QCD phase diagram in and out-of-equilibrium
- From moments of the distribution function to hydrodynamics: The non-conformal case
- Kinetic description of mixtures of anisotropic fluids
- Hydrodynamic fluctuations of entropy in one-dimensionally expanding system
Cited by in corpus (6)
- Dense Nuclear Matter Equation of State from Heavy-Ion Collisions
- The QCD phase diagram and Beam Energy Scan physics: a theory overview
- Relativistic second-order viscous hydrodynamics from kinetic theory with extended relaxation-time approximation
- Shear viscosity from perturbative Quantum Chromodynamics to the hadron resonance gas at finite baryon, strangeness, and electric charge densities
- Effects of magnetic field on the evolution of energy density fluctuations
- Viscous Gubser flow with conserved charges to benchmark fluid simulations