Quantum many-body scarring in a non-Abelian lattice gauge theory
Quantum many-body scarring (QMBS) is an intriguing mechanism of weak ergodicity breaking that has recently spurred significant attention. Particularly prominent in Abelian lattice gauge theories (LGTs), an open question is whether QMBS nontrivially arises in non-Abelian LGTs. Here, we present evidence of robust QMBS in a non-Abelian <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi>SU</a:mi><a:mo>(</a:mo><a:mn>2</a:mn><a:mo>)</a:mo></a:mrow></a:math> LGT with dynamical matter. Starting in product states that require little experimental overhead, we show that prominent QMBS arises for certain quenches, facilitated through meson and baryon-antibaryon excitations, highlighting its non-Abelian nature. The uncovered scarred dynamics manifests as long-lived coherent oscillations in experimentally accessible local observables as well as prominent revivals in the state fidelity. Our findings bring QMBS to the realm of non-Abelian LGTs, highlighting the intimate connection between scarring and gauge symmetry, and are amenable for observation in a recently proposed trapped-ion qudit quantum computer.
Authors
- Simone Montangero (ORCID: https://orcid.org/0000-0002-8882-2169)
- Marco Rigobello (ORCID: https://orcid.org/0000-0002-4544-3513)
- Darvin Wanisch (ORCID: https://orcid.org/0000-0001-8805-3761)
- Jad C. Halimeh (ORCID: https://orcid.org/0000-0002-0659-7990)
- Giovanni Cataldi (ORCID: https://orcid.org/0000-0002-9073-8978)
- Giuseppe Calajò (ORCID: https://orcid.org/0000-0002-5749-2224)
- Pietro Silvi (ORCID: https://orcid.org/0000-0001-5279-7064)
- Giuseppe Magnifico (ORCID: https://orcid.org/0000-0002-7280-445X)
Institutions
- University of Padua (IT)
- Istituto Nazionale di Fisica Nucleare (IT)
- Max Planck Institute of Quantum Optics (DE)
- Munich Center for Quantum Science and Technology (DE)
- University of Bari Aldo Moro (IT)
- Freie Universität Berlin (DE)
- Ludwig-Maximilians-Universität München (DE)
Publication Details
- Journal
- Physical Review Research
- Published
- 2025-03-27
- DOI
- https://doi.org/10.1103/physrevresearch.7.013322
- Citations
- 8
- Primary Topic
- Quantum many-body systems
- Type
- article
- Field-Weighted Citation Impact
- 9.97
Funders
- Dipartimenti di Eccellenza
- European Commission
- Deutsche Forschungsgemeinschaft
- Max-Planck-Gesellschaft
- Istituto Nazionale di Fisica Nucleare
- QuantERA
- Ministero dell'Università e della Ricerca
- HORIZON EUROPE Framework Programme
- Women's College Research Institute
- H2020 European Research Council