| Full text | |
| Author(s): |
Andreanov, Alexei
;
Carrega, Matteo
;
Murugan, Jeff
;
Olle, Jan
;
Rosa, Dario
;
Shir, Ruth
Total Authors: 6
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW B; v. 111, n. 3, p. 9-pg., 2025-01-24. |
| Abstract | |
A deep understanding of the mechanisms underlying many-body quantum chaos is one of the big challenges in contemporary theoretical physics. We tackle this problem in the context of a set of perturbed quadratic SachdevYe-Kitaev (SYK) Hamiltonians defined on graphs. This allows us to disentangle the geometrical properties of the underlying single-particle problem and the importance of the interaction terms, showing that the former is the dominant feature ensuring the single-particle to many-body chaotic transition. Our results are verified numerically with state-of-the-art numerical techniques, capable of extracting eigenvalues in a desired energy window of very large Hamiltonians. Our approach essentially provides a new way of viewing many-body chaos from a single-particle perspective. (AU) | |
| FAPESP's process: | 21/14335-0 - ICTP South American Institute for Fundamental Research: a regional center for Theoretical Physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 23/11832-9 - Quantum many-body systems: from quantum chaos to quantum technologies |
| Grantee: | Dario Rosa |
| Support Opportunities: | Research Grants - Young Investigators Grants |