Abstract
We study the phase diagram of an extended parafermion chain, which,in addition to terms coupling parafermions on neighbouring sites, alsopossesses terms involving four sites. Via a Fradkin–Kadanofftransformation the parafermion chain is shown to be equivalent to thenon-chiral \mathbf{\mathbb{Z}_3}ℤ3axial next-nearest neighbour Potts model. We discuss a possibleexperimental realisation using hetero-nanostructures. The
... read more