dc.contributor.author Xu, Cenke dc.contributor.author Sachdev, Subir dc.date.accessioned 2012-01-10T17:39:55Z dc.date.issued 2009 dc.identifier.citation Xu, Cenke, and Subir Sachdev. 2009. Global phase diagrams of frustrated quantum antiferromagnets in two dimensions: doubled Chern-Simons theory. Physical Review B 79(6): 064405. en_US dc.identifier.issn 1550-235X en_US dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:7459594 dc.description.abstract We present a general approach to understanding the quantum phases and phase transitions of quantum antiferromagnets in two spatial dimensions. We begin with the simplest spin liquid state, the $Z_2$ spin liquid, whose elementary excitations are spinons and visons, carrying $Z_2$ electric and magnetic charges respectively. Their dynamics are expressed in terms of a doubled $U(1)$ Chern-Simons theory, which correctly captures the 'topological' order of the $Z_2$ spin liquid state. We show that the same theory also yields a description of the variety of ordered phases obtained when one or more of the elementary excitations condense. Field theories for the transitions and multicritical points between these phases are obtained. We also survey experimental results on antiferromagnets on the anisotropic triangular lattice, and make connections between their phase diagrams and our results. en_US dc.description.sponsorship Physics en_US dc.language.iso en_US en_US dc.publisher The American Physical Society en_US dc.relation.isversionof doi:10.1103/PhysRevB.79.064405 en_US dc.relation.hasversion http://arxiv.org/abs/0811.1220v2 en_US dash.license OAP dc.subject strongly correlated electrons en_US dc.subject statistical mechanics en_US dc.title Global Phase Diagrams of Frustrated Quantum Antiferromagnets in Two Dimensions: Doubled Chern-Simons Theory en_US dc.type Journal Article en_US dc.description.version Author's Original en_US dc.relation.journal Physical Review B en_US dash.depositing.author Sachdev, Subir dc.date.available 2012-01-10T17:39:55Z dc.identifier.doi 10.1103/PhysRevB.79.064405 * dash.contributor.affiliated Sachdev, Subir
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