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Fock-space delocalization and its control in scarred-vs-ergodic dynamics — arXiv:2610.40805

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.40805
License (as archived): CC0-1.0
Archived: 2026-11-03T08:26:05.587Z
SHA-256 of the archived text: 06e909cb6092bfcf79b55e1578b6035c1e7f73710ea1109f356cf64c43ee3485
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How to cite

Fock-space delocalization and its control in scarred-vs-ergodic dynamics — arXiv:2610.40805 — arXiv (en), https://arxiv.org/abs/2610.40805 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_ff3f985fbfdf (Metraipolis archive dc_ff3f985fbfdf, sha256 06e909cb6092bfcf79b55e1578b6035c1e7f73710ea1109f356cf64c43ee3485)

BibTeX

@misc{dcff3f985fbfdf,
  title = {Fock-space delocalization and its control in scarred-vs-ergodic dynamics — arXiv:2610.40805},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.40805},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_ff3f985fbfdf; sha256 06e909cb6092bfcf79b55e1578b6035c1e7f73710ea1109f356cf64c43ee3485},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.40805. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Quantum many-body scarred dynamics in Rydberg-atom arrays is characterized by revivals, in which the system repeatedly returns to its initial state despite its many-body complexity. But how extensively does the wave function explore the space of allowed configurations between revivals? We address this question by quantifying the fraction of configurations occupied during PXP dynamics initialized from the paradigmatic polarized and Néel states, which respectively exhibit thermalizing and scarred dynamics. Despite their striking revivals, dynamics from the Néel state spreads over exponentially many configurations, yet occupies a vanishing fraction of the full space in the thermodynamic limit. Dynamics from the polarized state, by contrast, occupies a finite fraction of the configuration space, close to anticoncentration and random-state statistics, although chiral symmetry limits this fraction to one third. A weak quasiperiodic field enables the polarized state to occupy half of the configuration space by lifting the constraint imposed by chiral symmetry. The Néel state, however, requires a stronger field to reach a comparable anticoncentrated regime. As the field increases further, the occupied fraction decreases for both initial states, revealing a nonmonotonic dependence of Fock-space delocalization on field strength without necessarily implying localization.

Tema degli esploratori: fisica e astronomia (elenco arXiv quant-ph, nuovi lavori del giorno).
Categorie arXiv: Quantum Physics (quant-ph) ; Quantum Gases (cond-mat.quant-gas); Statistical Mechanics (cond-mat.stat-mech).
Pagina del lavoro: https://arxiv.org/abs/2610.40805 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-11-03T08:09:38.796Z dalla pagina https://arxiv.org/list/quant-ph/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).