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Q: Fachverband Quantenoptik und Photonik
Q 75: Quantum Systems between Bose and Fermi Statistics
Q 75.5: Vortrag
Freitag, 6. März 2026, 12:00–12:15, P 11
Quantum many-body scars in the tilted anyon-Hubbard model — •Ana Hudomal1, Ivana Vasić1, and Axel Pelster2 — 1Institute of Physics Belgrade, University of Belgrade, Serbia — 2Physics Department and Research Center OPTIMAS, RPTU Kaiserslautern-Landau, Germany
Quantum many-body scarring is a form of weak ergodicity breaking in which a small set of nonthermal eigenstates are embedded in an otherwise ergodic spectrum [1]. Scarring has been observed in both the tilted Bose-Hubbard model [2] and the tilted Fermi-Hubbard model [3], even though the underlying mechanisms appear to differ. Interestingly, in both models scarring appears in the same parameter regime and at unit filling, suggesting a deeper connection between them. Here we interpolate between bosonic and fermionic statistics by tuning the statistical angle θ in the anyon-Hubbard model [4] with open boundary conditions and a linear tilt potential. We identify characteristic signatures of scarring, including periodic revivals and atypical eigenstates, and investigate how their properties evolve as a function of θ.
[1] M. Serbyn et al., Nat. Phys. 17, 675 (2021).
[2] G.-X. Su et al., Phys. Rev. Research 5, 023010 (2023).
[3] J.-Y. Desaules et al., Phys. Rev. Lett. 126, 210601 (2021).
[4] T. Keilmann et al., Nat. Commun. 2, 361 (2011).
Keywords: Quantum many-body scars; Eigenstate thermalization hypothesis; Anyon-Hubbard model; Fractional statistics; Exact diagonalization