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arxiv 1807.09286 v2 pith:XVGHUEE2 submitted 2018-07-24 cond-mat.str-el

Dyonic zero-energy modes

classification cond-mat.str-el
keywords modesdyoniczero-energysymmetrytopologicalgroupmodelsystems
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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One-dimensional systems with topological order are intimately related to the appearance of zero-energy modes localized on their boundaries. The most common example is the Kitaev chain, which displays Majorana zero-energy modes and it is characterized by a two-fold ground state degeneracy related to the global $\mathbb{Z}_2$ symmetry associated with fermionic parity. By extending the symmetry to the $\mathbb{Z}_N$ group, it is possible to engineer systems hosting topological parafermionic modes. In this work, we address one-dimensional systems with a generic discrete symmetry group $G$. We define a ladder model of gauge fluxes that generalizes the Ising and Potts models and displays a symmetry broken phase. Through a non-Abelian Jordan-Wigner transformation, we map this flux ladder into a model of dyonic operators, defined by the group elements and irreducible representations of $G$. We show that the so-obtained dyonic model has topological order, with zero-energy modes localized at its boundary. These dyonic zero-energy modes are in general weak topological modes, but strong dyonic zero modes appear when suitable position-dependent couplings are considered.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Exact strong zero modes are generic in integrable spin systems with large anisotropy

    quant-ph 2026-05 unverdicted novelty 7.0

    Exact strong zero modes arise generically in integrable spin systems with large anisotropy from quasi-periodicity of the R-matrix and tracelessness of the K-matrix.

  2. Exact strong zero modes are generic in integrable spin systems with large anisotropy

    quant-ph 2026-05 unverdicted novelty 7.0

    Exact strong zero modes arise generically in integrable anisotropic spin models from quasi-periodicity of R-matrices and tracelessness of K-matrices, unifying known cases and predicting new ones.