A Unified Categorical Description of Quantum Hall Hierarchy and Anyon Superconductivity

TL;DR

This paper develops a unified category-theoretic framework for quantum Hall hierarchy and anyon superconductivity, incorporating charge conservation and doping procedures, predicting new phases and unifying known results.

Contribution

It introduces a novel categorical approach that unifies quantum Hall hierarchy and anyon superconductivity, predicting new phases and clarifying phase transitions.

Findings

Reproduces all known anyon superconductors from field theory.

Predicts new phases such as charge-2e and charge-ke anyon superconductors.

Provides a unified formalism for hierarchy transitions and superconductivity.

Abstract

We present a unified category-theoretic framework for quantum Hall hierarchy constructions and anyon superconductivity based on modular tensor categories over $\mathrm{Rep}(\mathrm{U}(1))$ and $\mathrm{sRep}(\mathrm{U}(1)^f)$. Our approach explicitly incorporates conserved $\mathrm{U}(1)$ charge and formulates doping via a generalized stack-and-condense procedure, in which an auxiliary topological order is stacked onto the parent phase, and the quasiparticles created by doping subsequently condense. Depending on whether this condensation preserves or breaks the $\mathrm{U}(1)$ symmetry, the system undergoes a transition to a quantum Hall hierarchy state or to an anyon superconductor. For anyon superconductors, the condensate charge is determined unambiguously by the charged local bosons contained in the condensable algebra. Our framework reproduces all known anyon superconductors obtained from field-theoretic analyses and further predicts novel phases, including a charge-$2e$ anyon superconductor derived from the Laughlin state and charge-$ke$ anyon superconductors arising from bosonic $\mathbb{Z}_k$ Read-Rezayi states. By placing hierarchy transitions and anyon superconductivity within a single mathematical formalism, our work provides a unified understanding of competing and proximate phases near experimentally realizable fractional quantum Hall states.