期刊
SCIPOST PHYSICS CORE
卷 5, 期 1, 页码 -出版社
SCIPOST FOUNDATION
DOI: 10.21468/SciPostPhysCore.5.1.008
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We study the phase diagram of an extended parafermion chain and show its equivalence to the non-chiral Z3 axial next-nearest neighbour Potts model. We discuss a possible experimental realization and find multiple gapped phases and a gapless phase.
We study the phase diagram of an extended parafermion chain, which, in addition to terms coupling parafermions on neighbouring sites, also possesses terms involving four sites. Via a Fradkin-Kadanoff transformation the parafermion chain is shown to be equivalent to the non-chiral Z3 axial next-nearest neighbour Potts model. We discuss a possible experimental realisation using hetero-nanostructures. The phase diagram contains several gapped phases, including a topological phase where the system possesses three (nearly) degenerate ground states, and a gapless Luttinger-liquid phase. Copyright J. Wouters et al.
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