Relativistic Fluid Dynamics Far From Local Equilibrium
Abstract
Fluid dynamics is traditionally thought to apply only to systems near local equilibrium. In this case, the effective theory of fluid dynamics can be constructed as a gradient series. Recent applications of resurgence suggest that this gradient series diverges, but can be Borel resummed, giving rise to a hydrodynamic attractor solution which is well defined even for large gradients. As a result, arbitrary initial data quickly approaches this attractor via nonhydrodynamic mode decay. This suggests the existence of a new theory of far-from-equilibrium fluid dynamics. In this Letter, the framework of fluid dynamics far from local equilibrium for a conformal system is introduced, and the hydrodynamic attractor solutions for resummed Baier-Romatschke-Son-Starinets-Stephanov theory, kinetic theory in the relaxation time approximation, and strongly coupled N = 4 super Yang-Mills theory are identified for a system undergoing Bjorken flow.
- Authors:
- Publication Date:
- Research Org.:
- Univ. of Colorado, Boulder, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1415876
- Alternate Identifier(s):
- OSTI ID: 1498985
- Grant/Contract Number:
- SC0008132
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 120 Journal Issue: 1; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Romatschke, Paul. Relativistic Fluid Dynamics Far From Local Equilibrium. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.120.012301.
Romatschke, Paul. Relativistic Fluid Dynamics Far From Local Equilibrium. United States. https://doi.org/10.1103/PhysRevLett.120.012301
Romatschke, Paul. Fri .
"Relativistic Fluid Dynamics Far From Local Equilibrium". United States. https://doi.org/10.1103/PhysRevLett.120.012301.
@article{osti_1415876,
title = {Relativistic Fluid Dynamics Far From Local Equilibrium},
author = {Romatschke, Paul},
abstractNote = {Fluid dynamics is traditionally thought to apply only to systems near local equilibrium. In this case, the effective theory of fluid dynamics can be constructed as a gradient series. Recent applications of resurgence suggest that this gradient series diverges, but can be Borel resummed, giving rise to a hydrodynamic attractor solution which is well defined even for large gradients. As a result, arbitrary initial data quickly approaches this attractor via nonhydrodynamic mode decay. This suggests the existence of a new theory of far-from-equilibrium fluid dynamics. In this Letter, the framework of fluid dynamics far from local equilibrium for a conformal system is introduced, and the hydrodynamic attractor solutions for resummed Baier-Romatschke-Son-Starinets-Stephanov theory, kinetic theory in the relaxation time approximation, and strongly coupled N = 4 super Yang-Mills theory are identified for a system undergoing Bjorken flow.},
doi = {10.1103/PhysRevLett.120.012301},
journal = {Physical Review Letters},
number = 1,
volume = 120,
place = {United States},
year = {Fri Jan 05 00:00:00 EST 2018},
month = {Fri Jan 05 00:00:00 EST 2018}
}
https://doi.org/10.1103/PhysRevLett.120.012301
Web of Science
Figures / Tables:
Works referenced in this record:
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