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dc.contributor.authorChowdhury, Debanjan
dc.contributor.authorRaju, Suvrat
dc.contributor.authorSachdev, Subir
dc.contributor.authorSingh, Ajay
dc.contributor.authorStrack, Philipp
dc.date.accessioned2014-05-28T19:44:32Z
dc.date.issued2013
dc.identifier.citationChowdhury, Debanjan, Suvrat Raju, Subir Sachdev, Ajay Singh, and Philipp Strack. 2013. Multipoint Correlators of Conformal Field Theories: Implications for Quantum Critical Transport. Physical Review B 87, no. 8: 085138.en_US
dc.identifier.issn1098-0121en_US
dc.identifier.issn1550-235Xen_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:12220685
dc.description.abstractWe compute three-point correlators between the stress-energy tensor and the conserved currents of conformal field theories (CFTs) in 2+1 dimensions. We first compute the correlators in the large-flavor-number expansion of conformal gauge theories and then perform the computation using holography. In the holographic approach, the correlators are computed from an effective action on (3+1)-dimensional anti-de Sitter space (AdS4) and depend upon the coefficient γ of a four-derivative term in the action. We find a precise match between the CFT and the holographic results, thus, fixing the values of γ. The CFTs of free fermions and bosons take the values γ=1/12,−1/12, respectively, and so saturate the bound ∣∣γ∣∣≤1/12 obtained earlier from the holographic theory; the correlator of the conserved gauge flux of U(1) gauge theories takes intermediate values of γ. The value of γ also controls the frequency dependence of the conductivity and other properties of quantum critical transport at nonzero temperatures. Our results for the values of γ lead to an appealing physical interpretation of particlelike or vortexlike transport near quantum phase transitions of interest in condensed-matter physics. This paper includes Appendices reviewing key features of the AdS-CFT correspondence for condensed-matter physicists.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Society (APS)en_US
dc.relation.isversionofdoi:10.1103/physrevb.87.085138en_US
dc.relation.hasversionhttp://arxiv.org/pdf/1210.5247v2.pdfen_US
dc.relation.hasversionhttp://qpt.physics.harvard.edu/p234.pdfen_US
dash.licenseOAP
dc.subjectQuantum Critical Transporten_US
dc.subjectAdS/CFT Correlatorsen_US
dc.titleMultipoint Correlators of Conformal Field Theories: Implications for Quantum Critical Transporten_US
dc.typeJournal Articleen_US
dc.description.versionAccepted Manuscripten_US
dc.relation.journalPhysical Review Ben_US
dash.depositing.authorSachdev, Subir
dc.date.available2014-05-28T19:44:32Z
dc.identifier.doi10.1103/physrevb.87.085138*
workflow.legacycommentsFAR 2014en_US
dash.contributor.affiliatedChowdhury, Debanjan
dash.contributor.affiliatedStrack, Philipp
dash.contributor.affiliatedSachdev, Subir


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