TY  - JOUR
A1  - Wondrak, Michael Florian
A1  - Kaminski, Matthias
A1  - Bleicher, Marcus
T1  - Shear transport far from equilibrium via holography
T2  - Physics Letters B
N2  - 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.
KW  - η/s
KW  - Far from equilibrium
KW  - Heavy-ion collisions
KW  - Holography
KW  - Shear viscosity
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/56518
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-565186
SN  - 1873-2445
SN  - 0370-2693
VL  - 811
IS  - 135973
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  -