Holographic constraints on Bjorken hydrodynamics at finite coupling

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DiNunno , B S , Grozdanov , S , Pedraza , J F & Young , S 2017 , ' Holographic constraints on Bjorken hydrodynamics at finite coupling ' , Journal of High Energy Physics , vol. 2017 , no. 10 , 110 . https://doi.org/10.1007/JHEP10(2017)110

Title: Holographic constraints on Bjorken hydrodynamics at finite coupling
Author: DiNunno, Brandon S.; Grozdanov, Saso; Pedraza, Juan F.; Young, Steve
Other contributor: University of Helsinki, Helsinki Institute of Physics
Date: 2017-10-17
Language: eng
Number of pages: 48
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
DOI: https://doi.org/10.1007/JHEP10(2017)110
URI: http://hdl.handle.net/10138/232656
Abstract: In large-N-c conformal field theories with classical holographic duals, inverse coupling constant corrections are obtained by considering higher-derivative terms in the corresponding gravity theory. In this work, we use type IIB supergravity and bottom-up Gauss-Bonnet gravity to study the dynamics of boost-invariant Bjorken hydrodynamics at finite coupling. We analyze the time-dependent decay properties of non-local observables (scalar two-point functions and Wilson loops) probing the different models of Bjorken flow and show that they can be expressed generically in terms of a few field theory parameters. In addition, our computations provide an analytically quanti fiable probe of the coupling-dependent validity of hydrodynamics at early times in a simple model of heavyion collisions, which is an observable closely analogous to the hydrodynamization time of a quark-gluon plasma. We find that to third order in the hydrodynamic expansion, the convergence of hydrodynamics is improved and that generically, as expected from field theory considerations and recent holographic results, the applicability of hydrodynamics is delayed as the field theory coupling decreases.
Subject: Holography and quark-gluon plasmas
AdS-CFT Correspondence
Quark-Gluon Plasma
HEAVY-ION COLLISIONS
QUARK-GLUON PLASMA
YANG-MILLS THEORY
SHEAR VISCOSITY
BLACK-HOLES
CFT PLASMA
FIELD-THEORIES
ART.
FLOW
CAUSALITY
114 Physical sciences
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