Weak and strong coupling equilibration in nonabelian gauge theories
Keegan, L., Kurkela, A., Romatschke, P., van der Schee, W., & Zhu, Y. (2016). Weak and strong coupling equilibration in nonabelian gauge theories. Journal of High Energy Physics, 2016(4), Article 31. https://doi.org/10.1007/JHEP04(2016)031
Julkaistu sarjassa
Journal of High Energy PhysicsPäivämäärä
2016Tekijänoikeudet
© The Author(s) 2016. Co-published with JHEP. This is an open-access article funded by SCOAP3 and licensed under CC BY 4.0.
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 outof-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.
Julkaisija
Springer Berlin HeidelbergISSN Hae Julkaisufoorumista
1127-2236Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/25673961
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