Corpus ID: 237571557

Quantum many-body scars have extensive multipartite entanglement

@inproceedings{Desaules2021QuantumMS,
  title={Quantum many-body scars have extensive multipartite entanglement},
  author={Jean-Yves Desaules and Francesca Pietracaprina and Zlatko Papi'c and John Goold and Silvia Pappalardi},
  year={2021}
}
Recent experimental observation of weak ergodicity breaking in Rydberg atom quantum simulators has sparked interest in quantum many-body scars – eigenstates which evade thermalisation at finite energy densities due to novel mechanisms that do not rely on integrability or protection by a global symmetry. A salient feature of quantum many-body scars is their sub-volume bipartite entanglement entropy. In this work we demonstrate that exact many-body scars also possess extensive multipartite… Expand

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En) = 1 for spin operators and eigenstates in the middle of the spectrum
    See the Supplemental Material for additional analysis and background calculations to support the results in the main text. The supplementary material contains Refs