Shear transport far from equilibrium via holography

  • In heavy-ion collisions, the quark-gluon plasma is produced far from equilibrium. This regime is currently inaccessible by direct quantum chromodynamics (QCD) computations. In a holographic context, we propose a general method to characterize transport properties based on well-defined two-point functions. We calculate shear transport and entropy far from equilibrium, defining a time-dependent ratio of shear viscosity to entropy density, . Large deviations from its near-equilibrium value , up to a factor of 2.5, are found for realistic situations at the Large Hadron Collider. We predict the far-from-equilibrium time-dependence of to substantially affect the evolution of the QCD plasma and to impact the extraction of QCD properties from flow coefficients in heavy-ion collision data.

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Metadaten
Author:Michael Florian WondrakORCiDGND, Matthias KaminskiORCiDGND, Marcus BleicherORCiDGND
URN:urn:nbn:de:hebis:30:3-565186
DOI:https://doi.org/10.1016/j.physletb.2020.135973
ISSN:1873-2445
ISSN:0370-2693
Parent Title (German):Physics Letters B
Publisher:Elsevier
Place of publication:Amsterdam [u.a.]
Document Type:Article
Language:English
Date of Publication (online):2020/11/25
Date of first Publication:2020/11/25
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2020/12/03
Tag:Far from equilibrium; Heavy-ion collisions; Holography; Shear viscosity; η/s
Volume:811
Issue:135973
Page Number:6
HeBIS-PPN:47790890X
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0