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Universal dynamics of a turbulent superfluid Bose gas

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Author(s):
Garcia-Orozco, A. D. ; Madeira, L. ; Moreno-Armijos, M. A. ; Fritsch, A. R. ; Tavares, P. E. S. ; Castilho, P. C. M. ; Cidrim, A. ; Roati, G. ; Bagnato, V. S.
Total Authors: 9
Document type: Journal article
Source: HYSICAL REVIEW; v. 106, n. 2, p. 10-pg., 2022-08-22.
Abstract

We study the emergence of universal scaling in the time-evolving momentum distribution of a harmonically trapped three-dimensional Bose-Einstein condensate, parametrically driven to a turbulent state. We demonstrate that the out-of-equilibrium dynamics post excitation is described by a single function due to nearby nonthermal fixed points. The observed behavior connects the dynamics of a quantum turbulent state to several far-fromequilibrium phenomena. We present a controllable protocol to explore universality in such systems, obtaining the associated scaling exponents. Our experimental results thus offer a promising route to investigate the complex dynamics of the quantum turbulent regime. (AU)

FAPESP's process: 18/09191-7 - Vortices and turbulence in strongly interacting quantum fluids and their mixtures
Grantee:Lucas Madeira
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: 13/07276-1 - CEPOF - Optics and Photonic Research Center
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 17/09390-7 - Entanglement and blockade effects in ultracold atomic clouds
Grantee:André Cidrim Santos
Support Opportunities: Scholarships in Brazil - Post-Doctoral