Deconfined criticality critically defined

Journal of the Physical Society of Japan

Volumn 74, Issue SUPPL., 2005, Pages 1-9

  Senthil, Todadri ^a   Balents, Leon ^b   Sachdev, Subir ^c   Vishwanath, Ashvin ^a   Fisher, Matthew P A ^d  

^a MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^b UNIVERSITY OF CALIFORNIA   (United States)

^c Yale University   (United States)

^d UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Antiferromagnet; Gauge theory; Spin liquid; Topological order; Valence bond solid

Indexed keywords

EID: 33947673822     PISSN: 00319015     EISSN: 13474073     Source Type: Journal    
DOI: 10.1143/jpsjs.74s.1     Document Type: Conference Paper

References (24)

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23. The bosonic spinon U (1) spin liquid state appearing here should be distinguished from the U (1) "staggered flux" spin liquid, which is described in terms of gapless fermionic spinon excitations. It has been argued in M. Hermele, T. Senthil, M. P. A. Fisher, P. A. Lee, N. Nagaosa, and X.-G. Wen: Phys. Rev. B 70 (2004) 214437 that, at least for large N SU (iV) antiferromagnets, the staggered flux spin liquid is stable against proliferation of monopoles. The monopole fugacity can be an irrelevant perturbation to the staggered flux spin liquid due to the presence of gapless spinon excitations. In this sense, the staggered flux spin liquid phase is similar to the g = gc critical fixed point of Fig 8. The U (1) spin liquid phase of Fig 8 is controlled by the g = ∞ fixed point: this has only has gapped spinon excitations, monopoles are relevant, and so the entire g > gc spin liquid phase is unstable.
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