English

Doping lattice non-abelian quantum Hall states

Strongly Correlated Electrons 2025-05-14 v2 Superconductivity High Energy Physics - Theory

Abstract

We study quantum phases of a fluid of mobile charged non-abelian anyons, which arise upon doping the lattice Moore-Read quantum Hall state at lattice filling ν=1/2\nu = 1/2 and its generalizations to the Read-Rezayi (RRk\mathrm{RR}_k) sequence at ν=k/(k+2)\nu = k/(k+2). In contrast to their abelian counterparts, non-abelian anyons present unique challenges due to their non-invertible fusion rules and non-abelian braiding structures. We address these challenges using a Chern-Simons-Ginzburg-Landau (CSGL) framework that incorporates the crucial effect of energy splitting between different anyon fusion channels at nonzero dopant density. For the Moore-Read state, we show that doping the charge e/4e/4 non-abelion naturally leads to a fully gapped charge-22 superconductor without any coexisting topological order. The chiral central charge of the superconductor depends on details of the interactions determining the splitting of anyon fusion channels. For general RRk\mathrm{RR}_k states, our analysis of states obtained by doping the basic non-abelion a0a_0 with charge e/(k+2)e/(k+2) reveals a striking even/odd pattern in the Read-Rezayi index kk. We develop a general physical picture for anyon-driven superconductivity based on charge-flux unbinding, and show how it relates to the CSGL description of doped abelian quantum Hall states. Finally, as a bonus, we use the CSGL formalism to describe transitions between the RRk\mathrm{RR}_k state and a trivial period-(k+2)(k+2) CDW insulator at fixed filling, driven by the gap closure of the fundamental non-abelian anyon a0a_0. Notably, for k=2k=2, this predicts a period-4 CDW neighboring the Moore-Read state at half-filling, offering a potential explanation of recent numerical observations in models of twisted MoTe2_2.

Keywords

Cite

@article{arxiv.2505.02893,
  title  = {Doping lattice non-abelian quantum Hall states},
  author = {Zhengyan Darius Shi and Carolyn Zhang and T. Senthil},
  journal= {arXiv preprint arXiv:2505.02893},
  year   = {2025}
}

Comments

32 pages, 2 figures, 14 pages of appendices. v2: added refs + fixed typos

R2 v1 2026-06-28T23:21:53.918Z