A Square Lattice Algebraic Spin Liquid with SO(5) Symmetry

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A Square Lattice Algebraic Spin Liquid with SO(5) Symmetry

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Title: A Square Lattice Algebraic Spin Liquid with SO(5) Symmetry
Author: Xu, Cenke; Sachdev, Subir

Note: Order does not necessarily reflect citation order of authors.

Citation: Xu, Cenke, and Subir Sachdev. 2008. A square lattice algebraic spin liquid with SO(5) symmetry. Physical Review Letters 100(13): 137201.
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Abstract: We propose a critical spin liquid ground state for S=1/2 antiferromagnets on the square lattice. In a renormalization group analysis of the “staggered flux“ algebraic spin liquid, we examine perturbations, present in the antiferromagnet, which break its global SU(4) symmetry to SO(5). At physical parameter values, we find an instability towards a fixed point with SO(5) symmetry. We discuss the possibility that this fixed point describes a transition between the Néel and valence bond solid states, and the relationship to the SO(5) nonlinear sigma model of Tanaka and Hu.
Published Version: doi://10.1103/PhysRevLett.100.137201
Other Sources: http://arxiv.org/abs/0711.3460v2
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:7692387
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