| Download ( PDF | 1MB) | Lizenz: Creative Commons Namensnennung-NichtKommerziell-KeineBearbeitung 4.0 International |
An SYK-inspired model with density–density interactions: Spectral & wave function statistics, Green’s function and phase diagram
Dieplinger, Johannes
, Bera, Soumya und Evers, Ferdinand
(2021)
An SYK-inspired model with density–density interactions: Spectral & wave function statistics, Green’s function and phase diagram.
Annals of Physics 435, S. 168503.
Veröffentlichungsdatum dieses Volltextes: 21 Mai 2021 05:09
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.45834
Zusammenfassung
The Sachdev-Ye-Kitaev (SYK) model is a rare example of a strongly-interacting system that is analytically tractable. Tractability arises because the model is largely structureless by design and therefore artificial: while the interaction is restricted to two-body terms, interaction matrix elements are "randomized" and therefore the corresponding interaction operator does not commute with the ...
The Sachdev-Ye-Kitaev (SYK) model is a rare example of a strongly-interacting system that is analytically tractable. Tractability arises because the model is largely structureless by design and therefore artificial: while the interaction is restricted to two-body terms, interaction matrix elements are "randomized" and therefore the corresponding interaction operator does not commute with the local density. Unlike conventional density-density-type interactions, the SYK-interaction is, in this sense, not integrable. We here investigate a variant of the (complex) SYK model, which restores this integrability. It features a randomized single-body term and a density-density-type interaction. We present numerical investigations suggesting that the model exhibits two integrable phases separated by several intermediate phases including a chaotic one. The chaotic phase carries several characteristic SYK-signatures including in the spectral statistics and the frequency scaling of the Green's function and therefore should be adiabatically connected to the non-Fermi liquid phase of the original SYK model. Thus, our model Hamiltonian provides a bridge from the SYK-model towards microscopic realism. (C) 2021 Elsevier Inc. All rights reserved.
Alternative Links zum Volltext
Beteiligte Einrichtungen
Verknüpfung von Datensätzen
-
Dieplinger, JohannesVorschau
, Bera, Soumya und Evers, Ferdinand
(2021)
An SYK-inspired model with density–density interactions: Spectral & wave function statistics, Green’s function and phase diagram.
Annals of Physics 435, S. 168503.
[Gegenwärtig angezeigt]-
Dieplinger, Johannes
, Soumya, Bera und Evers, Ferdinand
(2021)
Data Archive of "An SYK-inspired model with density–density interactions: Spectral & wave function statistics, Green’s function and phase diagram".
[Datensatz]
-
Details
| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | Annals of Physics | ||||
| Verlag: | ACADEMIC PRESS INC ELSEVIER SCIENCE | ||||
|---|---|---|---|---|---|
| Ort der Veröffentlichung: | SAN DIEGO | ||||
| Band: | 435 | ||||
| Seitenbereich: | S. 168503 | ||||
| Datum | Dezember 2021 | ||||
| Institutionen | Physik > Institut für Theoretische Physik > Lehrstuhl Ferdinand Evers | ||||
| Identifikationsnummer |
| ||||
| Stichwörter / Keywords | QUANTUM; BEHAVIOR; | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
| Status | Veröffentlicht | ||||
| Begutachtet | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden | Zum Teil | ||||
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-458343 | ||||
| Dokumenten-ID | 45834 |
Downloadstatistik
Downloadstatistik