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Title: Relativistic hydrodynamic attractors with broken symmetries: non-conformal and non-homogeneous

Abstract

Standard textbooks will state that hydrodynamics requires near-equilibrium to be applicable. Recently, however, out-of-equilibrium attractor solutions for hydrodynamics have been found in kinetic theory and holography in systems with a high degree of symmetry, suggesting the possibility of a genuine out-of-equilibrium formulation of hydrodynamics. This work demonstrates that attractor solutions also occur in non-conformal kinetic theory and spatially non-homogeneous systems, potentially having important implications for the interpretation of experimental data in heavy-ion and proton-proton collisions and relativistic fluid dynamics as a whole.

Authors:
 [1]
  1. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics. Center for Theory of Quantum Matter
Publication Date:
Research Org.:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1512405
Grant/Contract Number:  
SC0017905
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 12; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; quark-gluon plasma; resummation

Citation Formats

Romatschke, Paul. Relativistic hydrodynamic attractors with broken symmetries: non-conformal and non-homogeneous. United States: N. p., 2017. Web. doi:10.1007/jhep12(2017)079.
Romatschke, Paul. Relativistic hydrodynamic attractors with broken symmetries: non-conformal and non-homogeneous. United States. doi:10.1007/jhep12(2017)079.
Romatschke, Paul. Thu . "Relativistic hydrodynamic attractors with broken symmetries: non-conformal and non-homogeneous". United States. doi:10.1007/jhep12(2017)079. https://www.osti.gov/servlets/purl/1512405.
@article{osti_1512405,
title = {Relativistic hydrodynamic attractors with broken symmetries: non-conformal and non-homogeneous},
author = {Romatschke, Paul},
abstractNote = {Standard textbooks will state that hydrodynamics requires near-equilibrium to be applicable. Recently, however, out-of-equilibrium attractor solutions for hydrodynamics have been found in kinetic theory and holography in systems with a high degree of symmetry, suggesting the possibility of a genuine out-of-equilibrium formulation of hydrodynamics. This work demonstrates that attractor solutions also occur in non-conformal kinetic theory and spatially non-homogeneous systems, potentially having important implications for the interpretation of experimental data in heavy-ion and proton-proton collisions and relativistic fluid dynamics as a whole.},
doi = {10.1007/jhep12(2017)079},
journal = {Journal of High Energy Physics (Online)},
number = 12,
volume = 2017,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
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Citation Metrics:
Cited by: 27 works
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Figures / Tables:

Figure 1 Figure 1: Scaling variables A1, A2 for non-conformal kinetic theory in Bjorken flow with Λ0 = 1, $\tau$R = 0.1/T as a function of inverse gradient strength Γ. Note that for A2, scaling the gradient strength with the sound attenuation length implies that the Navier-Stokes result corresponds to an areamore » rather than a single curve. The curves labeled `Attractor LO approx.' are generated by solving eq. (2.7) for ξ0($\tau$0) and evaluating A1, A2 using (2.8).« less

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