6533b7ddfe1ef96bd12735bb
RESEARCH PRODUCT
Weak and strong coupling equilibration in nonabelian gauge theories
Wilke Van Der ScheeAleksi KurkelaAleksi KurkelaLiam KeeganPaul RomatschkeYan ZhuYan Zhusubject
High Energy Physics - TheoryNuclear and High Energy Physicsquark-gluon plasmaNuclear TheoryeducationNuclear TheoryFOS: Physical sciences114 Physical sciencesperturbative QCD01 natural sciencesNuclear Theory (nucl-th)ViscosityHigh Energy Physics - Phenomenology (hep-ph)AdS-CFT correspondencePhase (matter)0103 physical sciencesGauge theoryNuclear Experiment010306 general physicsCouplingPhysicsta114010308 nuclear & particles physicsEntropy productionkvarkki-gluoniplasmaHigh Energy Physics - PhenomenologyHigh Energy Physics - Theory (hep-th)Flow (mathematics)Quantum electrodynamicsKinetic theory of gasesStrong couplingParticle Physics - Theoryholography and quark-gluon plasmasdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-12-16 | Journal of High Energy Physics |