Symmetry-resolved entanglement entropy in a non-Abelian fractional quantum Hall state

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Authors: Mark J. Arildsen, Valentin Crépel, Nicolas Regnault, Benoit Estienne
Cited by: 1
References: 113

Abstract

Symmetry-resolved entanglement entropy provides a powerful framework for probing the internal structure of quantum many-body states by decomposing entanglement into contributions from distinct symmetry sectors. In this work, we apply matrix product state techniques to study the bosonic, non-Abelian Moore-Read quantum Hall state, enabling precise numerical evaluation of both the full counting statistics and symmetry-resolved entanglement entropies. Our results reveal an approximate equipartition of entanglement among symmetry sectors, consistent with theoretical expectations and subject to finite-size corrections. The results also show that these expectations for symmetry-resolved entanglement entropy remain valid in the case of a non-Abelian state where the topological sectors cannot be distinguished by the Abelian U ( 1 ) symmetry alone, and where neutral and charged modes possess distinct velocities. We additionally perform a detailed comparison of the entanglement spectrum with predictions from the Li-Haldane conjecture, finding remarkable agreement, and enabling a more precise understanding of the effects of the distinct neutral and charged velocities. This not only provides a stringent test of the conjecture but also highlights its explanatory power in understanding the origin and structure of finite-size effects across different symmetry sectors.

Fields of Study & Subjects

Quantum and electron transport phenomena Advancements in Semiconductor Devices and Circuit Design Low-power high-performance VLSI design

Publication details

Journal / source
Physical review. B./Physical review. B
Publisher
American Physical Society (APS)
Volume
113
Issue
7
Publication date
5 January 2026
Language
EN