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Many-Body Bound States in the Continuum

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arxiv 2307.05456 v1 pith:BGDJFG6I submitted 2023-07-11 quant-ph cond-mat.quant-gascond-mat.stat-mech

classification quant-phcond-mat.quant-gascond-mat.stat-mech
keywords bicsmany-bodyboundcontinuumstatesanalyticalattractivebeen
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A bound state in the continuum (BIC) is a spatially bounded energy eigenstate lying in a continuous spectrum of extended eigenstates. While various types of single-particle BICs have been found in the literature, whether or not BICs can exist in genuinely many-body systems remains inconclusive. Here, we provide numerical and analytical pieces of evidence for the existence of many-body BICs in a one-dimensional Bose-Hubbard chain with an attractive impurity potential, which was previously known to host a BIC in the two-particle sector. We also demonstrate that the many-body BICs prevent the system from thermalization when one starts from simple initial states that can be prepared experimentally.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Hierarchy of localized many-body bound states in an interacting open lattice

    cond-mat.quant-gas 2025-05 conditional novelty 7.0 of 10

    Localized many-body bound states in an open interacting fermionic lattice are traced to asymmetric string solutions of the Bethe ansatz, with recurrence relations predicting a hierarchy of such states.

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