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Quantum critical scaling behavior of deconfined spinons · Around

2007

Quantum critical scaling behavior of deconfined spinons

Nogueira, Flavio S., Kragset, Steinar, Sudbo, Asle

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We perform a renormalization group analysis of some important effective field theoretic models for deconfined spinons.

We show that deconfined spinons are critical for an isotropic SU(N) Heisenberg antiferromagnet, if $N$ is large enough.
We argue that nonperturbatively this result should persist down to N=2 and provide further evidence for the so called deconfined quantum criticality scenario.
Deconfined spinons are also shown to be critical for the case describing a transition between quantum spin nematic and dimerized phases.

Built on

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The critical exponent η \eta discussed here should not be confused with the one calculated in Ref. Halperin-Lubensky-Ma in the context of N N -component superconductors. There η \eta is the exponent of the superconducting order parameter, i.e., it is associated with a two-field correlation function and is not

Cited in the paper.

K. Harada, N. Kawashima, and M. Troyer, J. Phys. Soc. Jpn. 76

2007

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