Symmetry Resolved Entanglement Entropy in a Non-Abelian Fractional Quantum Hall State
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 $\mathrm{U}(1)$ 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.
Authors
- Valentin Crépel (ORCID: https://orcid.org/0000-0003-0240-3412)
- Nicolas Regnault (ORCID: https://orcid.org/0000-0002-0210-2428)
- Mark J. Arildsen (ORCID: https://orcid.org/0000-0002-4310-4980)
- Benoit Estienne (ORCID: https://orcid.org/0000-0003-2316-9661)
Institutions
- École Normale Supérieure - PSL (FR)
- Laboratoire de Physique Théorique et Hautes Energies (FR)
- Laboratoire de Physique de l'Ecole Normale Supérieure (FR)
Publication Details
- Journal
- ArXiv.org
- Published
- 2025-08-07
- Primary Topic
- Quantum and electron transport phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00