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Gaussian Scrooge Ensemble from Deep Thermalization in Free-Fermions — arXiv:2610.10279

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.10279
License (as archived): CC0-1.0
Archived: 2026-10-08T14:05:03.253Z
SHA-256 of the archived text: bcdc329a721166267a5e87cfe418364fb3e898db10c28d19e6ced1696af3bdda
Stable URL of this page: https://metraipolis.com/documento/dc_2bbd45aaff8e

How to cite

Gaussian Scrooge Ensemble from Deep Thermalization in Free-Fermions — arXiv:2610.10279 — arXiv (en), https://arxiv.org/abs/2610.10279 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_2bbd45aaff8e (Metraipolis archive dc_2bbd45aaff8e, sha256 bcdc329a721166267a5e87cfe418364fb3e898db10c28d19e6ced1696af3bdda)

BibTeX

@misc{dc2bbd45aaff8e,
  title = {Gaussian Scrooge Ensemble from Deep Thermalization in Free-Fermions — arXiv:2610.10279},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.10279},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_2bbd45aaff8e; sha256 bcdc329a721166267a5e87cfe418364fb3e898db10c28d19e6ced1696af3bdda},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.10279. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Deep thermalization indicates the emergence of universal ensembles of pure states in a subsystem after measuring its environment. We investigate this phenomenon in a free-fermion chain using local measurements that preserve Gaussianity and break particle-number conservation. Although the measurement outcomes provide partial information about local conserved charges within a finite subsystem, we argue that this information becomes negligible in the thermodynamic limit. This effective non-revelation underlies the emergence of a fermionic Gaussian Scrooge ensemble, determined by the subsystem's generalized Gibbs ensemble. We construct this universal ensemble directly at the subsystem level and provide numerical evidence that it describes the late-time projected ensemble at finite temperature. Our results extend the description of thermalization in non-interacting integrable systems beyond the reduced density matrix to universal statistics of conditional pure states.

Tema degli esploratori: fisica e astronomia (elenco arXiv quant-ph, nuovi lavori del giorno).
Categorie arXiv: Statistical Mechanics (cond-mat.stat-mech) ; Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2610.10279 — 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 2026-10-08T13:22:45.641Z dalla pagina https://arxiv.org/list/quant-ph/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).