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Nonlocal Magic Spreading in Many-body Quantum Dynamics: From Chaotic Evolution to Quasi-particle Picture in Integrable Models — arXiv:2609.20951

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.20951
License (as archived): CC0-1.0
Archived: 2026-10-10T02:52:19.574Z
SHA-256 of the archived text: 4db096eef9d381ef1a53e4a08c6425e0124be1261aae65a9e67c4332fb56275e
Stable URL of this page: https://metraipolis.com/documento/dc_633dd027bb07

How to cite

Nonlocal Magic Spreading in Many-body Quantum Dynamics: From Chaotic Evolution to Quasi-particle Picture in Integrable Models — arXiv:2609.20951 — arXiv (en), https://arxiv.org/abs/2609.20951 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_633dd027bb07 (Metraipolis archive dc_633dd027bb07, sha256 4db096eef9d381ef1a53e4a08c6425e0124be1261aae65a9e67c4332fb56275e)

BibTeX

@misc{dc633dd027bb07,
  title = {Nonlocal Magic Spreading in Many-body Quantum Dynamics: From Chaotic Evolution to Quasi-particle Picture in Integrable Models — arXiv:2609.20951},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.20951},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_633dd027bb07; sha256 4db096eef9d381ef1a53e4a08c6425e0124be1261aae65a9e67c4332fb56275e},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.20951. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Entanglement and magic are resources that reveal complementary aspects of quantum many-body systems. Their interplay is captured by nonlocal magic, the magic that survives arbitrary local changes of basis. Yet their markedly different dynamical behavior leaves open how this irreducible component of magic spreads. Here we connect nonlocal magic to the capacity of entanglement, a tractable quantity measuring fluctuations of the entanglement Hamiltonian. This connection enables analytically controlled predictions across a wide range of many-body dynamics, from chaotic to integrable systems, which we investigate also using large-scale numerical simulations. In chaotic systems, nonlocal magic exhibits a transient buildup, with logarithmic growth in time followed by decay to a size-independent value. For integrable systems, we develop a quasiparticle picture in quantitative agreement with numerics, showing that the same initial growth instead leads to saturation at a value logarithmic in subsystem size. These contrasting behaviors have an operational consequence for entanglement embezzlement: the strongest scramblers embezzle only transiently, whereas free-fermionic dynamics can sustain universal embezzlement in the steady state.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-21 in quant-ph).
Categorie arXiv: Quantum Physics (quant-ph) ; Statistical Mechanics (cond-mat.stat-mech).
Pagina del lavoro: https://arxiv.org/abs/2609.20951 — 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 2026-10-10T02:31:30.411Z dalla pagina https://arxiv.org/catchup/quant-ph/2026-09-21?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).