Resonating color state and emergent chromodynamics in the kagome antiferromagnet
Strongly Correlated Electrons
2015-05-27 v3
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.
Keywords
Cite
@article{arxiv.1104.3033,
title = {Resonating color state and emergent chromodynamics in the kagome antiferromagnet},
author = {O. Cepas and A. Ralko},
journal= {arXiv preprint arXiv:1104.3033},
year = {2015}
}
Comments
4 pages, 4 figures, v2: printable figs, v3: publ. version