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Title: Second-order ( 2 + 1 ) -dimensional anisotropic hydrodynamics

Journal Article · · Physical Review C, Nuclear Physics

We present a complete formulation of second-order (2+1)-dimensional anisotropic hydrodynamics. The resulting framework generalizes leading-order anisotropic hydrodynamics by allowing for deviations of the one-particle distribution function from the spheroidal form assumed at leading order. We derive complete second-order equations of motion for the additional terms in the macroscopic currents generated by these deviations from their kinetic definition using a Grad-Israel-Stewart 14-moment ansatz. The result is a set of coupled partial differential equations for the momentum-space anisotropy parameter, effective temperature, the transverse components of the fluid four-velocity, and the viscous tensor components generated by deviations of the distribution from spheroidal form. We then perform a quantitative test of our approach by applying it to the case of one-dimensional boost-invariant expansion in the relaxation time approximation (RTA) in which case it is possible to numerically solve the Boltzmann equation exactly.We demonstrate that the second-order anisotropic hydrodynamics approach provides an excellent approximation to the exact (0+1)-dimensional RTA solution for both small and large values of the shear viscosity.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0004286; SC0004104
OSTI ID:
1604545
Alternate ID(s):
OSTI ID: 1179929
Journal Information:
Physical Review C, Nuclear Physics, Vol. 90, Issue 5; ISSN 0556-2813
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 114 works
Citation information provided by
Web of Science

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Predictions for Bottomonia Suppression in 5.023 TeV Pb-Pb Collisions journal August 2016
New theories of relativistic hydrodynamics in the LHC era journal February 2018
Prescaling and far-from-equilibrium hydrodynamics in the quark-gluon plasma journal January 2021
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Studying the validity of relativistic hydrodynamics with a new exact solution of the Boltzmann equation text January 2014
Relativistic third-order viscous corrections to the entropy four-current from kinetic theory text January 2014
Anisotropic Flow and Jet Quenching in Relativistic Nuclear Collisions text January 2015
Pre-equilibrium evolution effects on heavy-ion collision observables preprint January 2015
Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions text January 2015
Relativistic hydrodynamics in heavy-ion collisions: general aspects and recent developments text January 2016
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