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arXiv · 1104.3033

Resonating color state and emergent chromodynamics in the kagome antiferromagnet

O. Cepas·A. Ralko
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Abstract

We argue that the spin-wave breakdown in the Heisenberg kagome antiferromagnet signals an instability of the ground state and leads, through an emergent local constraint, to a quantum dynamics described by a gauge theory similar to that of chromodynamics. For integer spins, we show that the quantum fluctuations of the gauge modes select the sqrt(3)xsqrt(3) Neel state with an on-site moment renormalized by color resonances. We find non-magnetic low-energy excitations that may be responsible for a deconfinement "transition" at experimentally accessible temperatures which we estimate.

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O. Cepas, A. Ralko. 2011-08-30. Resonating color state and emergent chromodynamics in the kagome antiferromagnet. https://doi.org/10.1103/physrevb.84.020413

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