The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons

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dc.contributor.advisorPeshier, Andreen_ZA
dc.contributor.authorJackson, Gregen_ZA
dc.date.accessioned2017-01-25T14:12:04Z
dc.date.available2017-01-25T14:12:04Z
dc.date.issued2016en_ZA
dc.description.abstractHeavy ion experiments at the LHC and RHIC have supported the existence of a quark-gluon plasma (QGP), which is strongly coupled and behaves as an almost ideal fluid. We shall discuss both bulk thermodynamic and off-equilibrium transport properties of the QGP, within the theory of quantum chromodynamics (QCD). Meaningful approximations of most observables require quantum fluctuations to be taken into account. These arise in perturbation theory as loop corrections to tree level amplitudes, and describe both the scale-dependence of the coupling and charge screening in a many- body system. We emphasise that because the effective interaction strength, for a QGP, may vary considerably at the relevant scales, the running of the coupling cannot be ignored. The goal of this thesis is to understand better a specific, long-standing question in the field of heavy ion physics: why the QGP has a remarkably small shear viscosity to entropy density ratio η/s ~< 0:5, near the confinement temperature. Our main argument hinges on combining both the thermal and vacuum fluctuations in resummation-improved perturbation theory. In this respect, we thoroughly analyse the range of applicability for perturbative approximations in which the coupling may be 'moderately' large.ηen_ZA
dc.identifier.apacitationJackson, G. (2016). <i>The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Physics. Retrieved from http://hdl.handle.net/11427/23061en_ZA
dc.identifier.chicagocitationJackson, Greg. <i>"The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Physics, 2016. http://hdl.handle.net/11427/23061en_ZA
dc.identifier.citationJackson, G. 2016. The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Jackson, Greg AB - Heavy ion experiments at the LHC and RHIC have supported the existence of a quark-gluon plasma (QGP), which is strongly coupled and behaves as an almost ideal fluid. We shall discuss both bulk thermodynamic and off-equilibrium transport properties of the QGP, within the theory of quantum chromodynamics (QCD). Meaningful approximations of most observables require quantum fluctuations to be taken into account. These arise in perturbation theory as loop corrections to tree level amplitudes, and describe both the scale-dependence of the coupling and charge screening in a many- body system. We emphasise that because the effective interaction strength, for a QGP, may vary considerably at the relevant scales, the running of the coupling cannot be ignored. The goal of this thesis is to understand better a specific, long-standing question in the field of heavy ion physics: why the QGP has a remarkably small shear viscosity to entropy density ratio η/s ~< 0:5, near the confinement temperature. Our main argument hinges on combining both the thermal and vacuum fluctuations in resummation-improved perturbation theory. In this respect, we thoroughly analyse the range of applicability for perturbative approximations in which the coupling may be 'moderately' large.η DA - 2016 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2016 T1 - The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons TI - The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons UR - http://hdl.handle.net/11427/23061 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/23061
dc.identifier.vancouvercitationJackson G. The Runny Gauge Plasma: shear viscosity to entropy for quarks and gluons. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Physics, 2016 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/23061en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Physicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherPhysicsen_ZA
dc.titleThe Runny Gauge Plasma: shear viscosity to entropy for quarks and gluonsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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