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dc.contributor.advisorDenef, Frederik
dc.contributor.authorPetrov, Pavel
dc.date.accessioned2013-03-06T16:12:49Z
dc.date.issued2013-03-06
dc.date.submitted2012
dc.identifier.citationPetrov, Pavel. 2012. Effect of Curvature Squared Corrections to Gravitational Action on Viscosity-to-Entropy Ratio of the Dual Gauge Theory. Doctoral dissertation, Harvard University.en_US
dc.identifier.otherhttp://dissertations.umi.com/gsas.harvard:10549en
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:10368126
dc.description.abstractIn this thesis we study the properties of strongly-coupled large-N conformal field theories (CFT’s) using AdS/CFT correspondence. Chapter 1 serves as an introduction. In Chapter 2 we study the shear viscosity of strongly-coupled large-N conformal field theories. We find that it is affected by \(R^2\) corrections to the AdS action and present an example of 4D theory in which the the conjectured universal lower bound on viscosity-to-entropy ratio \(\eta/s > 1/4 \pi\) is violated by 1/N corrections. This fact proves that there is no universal lower bound of \(1/4 \pi\) on viscosity-to-entropy ratio and may be relevant for the studies of QCD quark-gluon plasma for which this ratio is experimentally found to be close to \(1/4 \pi\). In Chapter 3 we study the formation of the electron star in 4D AdS space. We show that in a gravity theory with charged fermions a layer of charged fermion fluid may form at a finite distance from the charged black hole. We show that these “electron stars” are candidate gravity duals for strongly interacting fermion systems at finite density and finite temperature. Entropy density for such systems scales as \(s \sim T^{2/z}\) at low temperatures as expected from IR criticality of electron stars solutions.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dash.licenseMETA_ONLY
dc.subjectPhysicsen_US
dc.subjectTheoretical physicsen_US
dc.subjectAdS/CFTen_US
dc.subjectblack holesen_US
dc.subjectelectron starsen_US
dc.subjectentropyen_US
dc.subjectgravityen_US
dc.subjectviscosityen_US
dc.titleEffect of Curvature Squared Corrections to Gravitational Action on Viscosity-to-Entropy Ratio of the Dual Gauge Theoryen_US
dc.typeThesis or Dissertationen_US
dash.embargo.until10000-01-01
thesis.degree.date2012en_US
thesis.degree.disciplinePhysicsen_US
thesis.degree.grantorHarvard Universityen_US
thesis.degree.leveldoctoralen_US
thesis.degree.namePh.D.en_US
dc.contributor.committeeMemberStrominger, Andrewen_US
dc.contributor.committeeMemberFranklin, Melissaen_US
dash.contributor.affiliatedPetrov, Pavel


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