| Naslov: | Single-particle universality of the many-body spectral form factor |
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| Avtorji: | ID Flynn, Michael O. (Avtor)
ID Vidmar, Lev, Institut "Jožef Stefan" (Avtor)
ID Ikeda, Tatsuhiko N. (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.160403
 PDF - Predstavitvena datoteka, prenos (756,74 KB)
MD5: 2DAE22B8AABCCF6F77455872D1ABC863
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  IJS - Institut Jožef Stefan
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| Povzetek: | We consider systems of fermions evolved by noninteracting unitary circuits with correlated on-site potentials. When these potentials are drawn from the eigenvalue distribution of a circular random matrix ensemble, the single-particle sector exhibits chaotic dynamics. The corresponding many-body spectral form factors (SFFs) can be computed exactly, revealing signatures of single-particle chaos in the many-body spectral statistics. Due to the absence of interactions the SFF grows exponentially in time, a result which we demonstrate through simple arguments, scaling collapses, and closed-form evaluation of the SFF. Upon introducing interactions, the SFF crosses over to a linear growth regime consistent with many-body random matrix universality. Our exact results for the SFF provide a baseline for future studies of the crossover between single-particle and many-body random matrix behavior. |
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| Ključne besede: | physics, quantum chaos, disordered systems |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Poslano v recenzijo: | 08.11.2024 |
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| Datum sprejetja članka: | 12.03.2024 |
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| Datum objave: | 23.04.2025 |
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| Založnik: | American Physical Society |
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| Leto izida: | 2025 |
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| Št. strani: | str. 160403-1-160403-6 |
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| Številčenje: | Vol. 134, [article no.] 160403 |
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| PID: | 20.500.12556/DiRROS-28920  |
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| UDK: | 53 |
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| ISSN pri članku: | 1079-7114 |
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| DOI: | 10.1103/PhysRevLett.134.160403 |
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| COBISS.SI-ID: | 274482691 |
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| Opomba: | Nasl. z nasl. zaslona;
Opis vira z dne 8. 4. 2026;
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| Datum objave v DiRROS: | 14.04.2026 |
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| Število ogledov: | 107 |
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| Število prenosov: | 72 |
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| Metapodatki: |    |
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