DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Higher order and anisotropic hydrodynamics for Bjorken and Gubser flows

Journal Article · · Physical Review. C
 [1];  [2];  [1];  [3]
  1. Tata Inst. of Fundamental Research, Mumbai (India). Dept. of Nuclear and Atomic Physics
  2. The Ohio State Univ., Columbus, OH (United States). Dept. of Physics; European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.
  3. The Ohio State Univ., Columbus, OH (United States). Dept. of Physics

We study the evolution of hydrodynamic and nonhydrodynamic moments of the distribution function using anisotropic and third-order Chapman-Enskog hydrodynamics for systems undergoing Bjorken and Gubser flows. The hydrodynamic results are compared with the exact solution of the Boltzmann equation with a collision term in relaxation time approximation. While the evolution of the hydrodynamic moments of the distribution function (i.e., of the energy momentum tensor) can be described with high accuracy by both hydrodynamic approximation schemes, their description of the evolution of the entropy of the system is much less precise. We attribute this to large contributions from nonhydrodynamic modes coupling into the entropy evolution, which are not well captured by the hydrodynamic approximations. The differences between the exact solution and the hydrodynamic approximations are larger for the third-order Chapman-Enskog hydrodynamics than for anisotropic hydrodynamics, which effectively resums some of the dissipative effects from anisotropic expansion to all orders in the anisotropy, and are larger for Gubser flow than for Bjorken flow. Overall, anisotropic hydrodynamics provides the most precise macroscopic description for these highly anisotropically expanding systems.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
Grant/Contract Number:
SC0004286; ACI-1550223
OSTI ID:
1454315
Alternate ID(s):
OSTI ID: 1503828; OSTI ID: 1604328
Journal Information:
Physical Review. C, Vol. 97, Issue 6; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

References (53)

Studying the validity of relativistic hydrodynamics with a new exact solution of the Boltzmann equation journal December 2014
Relativistic third-order viscous corrections to the entropy four-current from kinetic theory journal February 2015
Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics journal March 2005
Conformal hydrodynamics in Minkowski and de Sitter spacetimes journal May 2011
Analytic Solution of the Boltzmann Equation in an Expanding System journal January 2016
Boltzmann equation with a nonlocal collision term and the resultant dissipative fluid dynamics journal March 2013
A relativistic relaxation-time model for the Boltzmann equation journal June 1974
Shear Viscosity of Strongly Coupled N = 4 Supersymmetric Yang-Mills Plasma journal August 2001
Complete relativistic second-order dissipative hydrodynamics from the entropy principle journal February 2013
Relativistic third-order dissipative fluid dynamics from kinetic theory journal August 2013
Projection method and new formulation of leading-order anisotropic hydrodynamics journal March 2014
Erratum: Derivation of transient relativistic fluid dynamics from the Boltzmann equation [Phys. Rev. D 85 , 114047 (2012)] journal February 2015
Symmetry constraints on generalizations of Bjorken flow journal October 2010
Relativistic (lattice) Boltzmann equation with nonideal equation of state journal March 2012
Collective modes of an anisotropic quark-gluon plasma journal August 2003
Second order hydrodynamic coefficients from kinetic theory journal March 2009
New relativistic dissipative fluid dynamics from kinetic theory journal March 2013
Transient relativistic thermodynamics and kinetic theory journal April 1979
Dissipative dynamics of highly anisotropic systems journal December 2010
Anisotropic fluid dynamics for Gubser flow journal May 2017
Causal theories of dissipative relativistic fluid dynamics for nuclear collisions journal March 2004
Particle production in relativistic heavy-ion collisions: A consistent hydrodynamic approach journal October 2013
Perfect fluidity of a dissipative system: Analytical solution for the Boltzmann equation in AdS 2 ⊗ S 2 journal December 2015
Anisotropic matching principle for the hydrodynamic expansion journal October 2016
Anisotropic hydrodynamics for conformal Gubser flow journal February 2015
Transport coefficients for bulk viscous evolution in the relaxation-time approximation journal October 2014
Highly relativistic nucleus-nucleus collisions: The central rapidity region journal January 1983
Collective Flow and Viscosity in Relativistic Heavy-Ion Collisions journal October 2013
Relativistic dissipative hydrodynamics from kinetic theory with relaxation-time approximation journal May 2013
Closing the equations of motion of anisotropic fluid dynamics by a judicious choice of a moment of the Boltzmann equation journal December 2016
Nonlinear dynamics from the relativistic Boltzmann equation in the Friedmann-Lemaître-Robertson-Walker spacetime journal December 2016
On the kinetic theory of rarefied gases journal December 1949
Exact solution of the (0+1)-dimensional Boltzmann equation for massive Bose–Einstein and Fermi–Dirac gases journal February 2015
Generic instabilities in first-order dissipative relativistic fluid theories journal February 1985
Testing different formulations of leading-order anisotropic hydrodynamics journal February 2016
Stability and causality in dissipative relativistic fluids journal December 1983
Derivation of transient relativistic fluid dynamics from the Boltzmann equation journal June 2012
Zum Paradoxon der W�rmeleitungstheorie journal August 1967
New Exact Solution of the Relativistic Boltzmann Equation and its Hydrodynamic Limit journal November 2014
Relativistic viscous hydrodynamics for heavy-ion collisions: A comparison between the Chapman-Enskog and Grad methods journal May 2014
Second-order ( 2 + 1 ) -dimensional anisotropic hydrodynamics journal November 2014
Derivation of anisotropic dissipative fluid dynamics from the Boltzmann equation journal June 2016
Exact solutions of the Boltzmann equation and optimized hydrodynamic approaches for relativistic heavy-ion collisions journal July 2016
The Thermodynamics of Irreversible Processes. I. The Simple Fluid journal August 1940
Relaxation-time approximation and relativistic third-order viscous hydrodynamics from kinetic theory journal November 2014
Anisotropic nonequilibrium hydrodynamic attractor journal February 2018
Testing viscous and anisotropic hydrodynamics in an exactly solvable case journal August 2013
Thermal equilibration in ultra-relativistic heavy-ion collisions journal April 1984
Exact solution of the ( 0 + 1 )-dimensional Boltzmann equation for a massive gas journal May 2014
Hydrodynamization in kinetic theory: Transient modes and the gradient expansion journal May 2018
Highly anisotropic hydrodynamics in 3 + 1 space-time dimensions journal June 2012
Far-from-equilibrium attractors and nonlinear dynamical systems approach to the Gubser flow journal February 2018
Wigner function and normal ordering journal March 1980

Cited By (2)

Radiative heavy quark energy loss in an expanding viscous QCD plasma journal June 2018
Exact solutions and attractors of higher-order viscous fluid dynamics for Bjorken flow text January 2019