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Title: Azimuthal anisotropies at high momentum from purely non-hydrodynamic transport

Abstract

In the limit of short mean free path, relativistic kinetic theory gives rise to hydrodynamics through a systematically improvable gradient expansion. In the present work, a systematically improvable expansion in the opposite limit of large mean free path is considered, describing the dynamics of particles which are almost, but not quite, non-interacting. This non-hydrodynamic “eremitic” expansion does not break down for large gradients, and may be useful in situations where a hydrodynamic treatment is not applicable. As applications, azimuthal anisotropies at high transverse momenta in Pb + Pb and p + Pb collisions at $$ \sqrt{s}$$ = 5.02 TeV are calculated from the first order eremitic expansion of kinetic theory in the relaxation time approximation.

Authors:
Publication Date:
Research Org.:
Univ. of Colorado, Boulder, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1463912
Alternate Identifier(s):
OSTI ID: 1510001
Grant/Contract Number:  
SC0017905
Resource Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Name: European Physical Journal. C, Particles and Fields Journal Volume: 78 Journal Issue: 8; Journal ID: ISSN 1434-6044
Publisher:
Springer Science + Business Media
Country of Publication:
Germany
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Romatschke, Paul. Azimuthal anisotropies at high momentum from purely non-hydrodynamic transport. Germany: N. p., 2018. Web. doi:10.1140/epjc/s10052-018-6112-6.
Romatschke, Paul. Azimuthal anisotropies at high momentum from purely non-hydrodynamic transport. Germany. doi:10.1140/epjc/s10052-018-6112-6.
Romatschke, Paul. Fri . "Azimuthal anisotropies at high momentum from purely non-hydrodynamic transport". Germany. doi:10.1140/epjc/s10052-018-6112-6.
@article{osti_1463912,
title = {Azimuthal anisotropies at high momentum from purely non-hydrodynamic transport},
author = {Romatschke, Paul},
abstractNote = {In the limit of short mean free path, relativistic kinetic theory gives rise to hydrodynamics through a systematically improvable gradient expansion. In the present work, a systematically improvable expansion in the opposite limit of large mean free path is considered, describing the dynamics of particles which are almost, but not quite, non-interacting. This non-hydrodynamic “eremitic” expansion does not break down for large gradients, and may be useful in situations where a hydrodynamic treatment is not applicable. As applications, azimuthal anisotropies at high transverse momenta in Pb + Pb and p + Pb collisions at $ \sqrt{s}$ = 5.02 TeV are calculated from the first order eremitic expansion of kinetic theory in the relaxation time approximation.},
doi = {10.1140/epjc/s10052-018-6112-6},
journal = {European Physical Journal. C, Particles and Fields},
number = 8,
volume = 78,
place = {Germany},
year = {2018},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1140/epjc/s10052-018-6112-6

Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 Fig. 1: Collective sound mode structure in the complex frequency plane for kinetic theory in the relaxation time approximation (middle panel), small mean free path (fluid) expansion (left panel) and large mean free path (hermit) expansion (right panel). Simple poles of the retarded correlator are shown as crosses, while logarithmicmore » branch cuts are shown as lines« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.