Weak and strong coupling equilibration in nonabelian gauge theories
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13130_2016_Article_3678.pdf
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Author(s)
Keegan, Liam
Kurkela, Aleksi
Romatschke, Paul
van der Schee, Wilke
Zhu, Yan
Date Issued
April 2016
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Keegan, Liam et al. “Weak and Strong Coupling Equilibration in Nonabelian Gauge Theories.” Journal of High Energy Physics 2016.4 (2016): n. pag.
Version
Final published version
Abstract
We present a direct comparison studying equilibration through kinetic theory at weak coupling and through holography at strong coupling in the same set-up. The set-up starts with a homogeneous thermal state, which then smoothly transitions through an out-of-equilibrium phase to an expanding system undergoing boost-invariant flow. This first apples-to-apples comparison of equilibration provides a benchmark for similar equilibration processes in heavy-ion collisions, where the equilibration mechanism is still under debate. We find that results at weak and strong coupling can be smoothly connected by simple, empirical power-laws for the viscosity, equilibration time and entropy production of the system.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1007/JHEP04(2016)031
