| Full text | |
| Author(s): |
Moreno-Armijos, M. A.
;
Fritsch, A. R.
;
Garcia-Orozco, A. D.
;
Sab, S.
;
Telles, G.
;
Zhu, Y.
;
Madeira, L.
;
Nazarenko, S.
;
Yukalov, V. I.
;
Bagnato, V. S.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | Physical Review Letters; v. 134, n. 2, p. 6-pg., 2025-01-14. |
| Abstract | |
The dynamics of nonequilibrium closed quantum systems and their route to thermalization are of fundamental interest to several fields, from cosmology to particle physics. However, a comprehensive description of nonequilibrium phenomena still presents a significant challenge. In this work, we report the observation of distinct stages during the relaxation of the decaying turbulence in trapped BoseEinstein condensates. Our findings show a direct particle cascade from low to high momenta, a consequence of the energy injection in the system, exhibiting a characteristic universal scaling. This stage is followed by an inverse particle cascade responsible for repopulating the previously depleted condensate. Both cascades can be explained through self-similar solutions provided by wave turbulence theory. These findings provide important insights into the relaxation stages of out-of-equilibrium quantum many-body systems. (AU) | |
| FAPESP's process: | 22/00697-0 - Study of out-of-equilibrium systems: turbulence generation and non-thermal fixed points detection |
| Grantee: | Amilson Rogelso Fritsch |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 14/50857-8 - National Institute in Basic Optics and Applied to Life Sciences |
| Grantee: | Vanderlei Salvador Bagnato |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 23/04451-9 - High-performance computing applied to quantum fluids |
| Grantee: | Lucas Madeira |
| Support Opportunities: | Scholarships in Brazil - Technical Training Program - Technical Training |
| FAPESP's process: | 13/07276-1 - CEPOF - Optics and Photonic Research Center |
| Grantee: | Vanderlei Salvador Bagnato |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |