| Full text | |
| Author(s): |
Marino, Attis V. M.
;
Madeira, Lucas
;
Cidrim, Andre
;
dos Santos, F. E. A.
;
Bagnato, Vanderlei S.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | European Physical Journal-Special Topics; v. 230, n. 4, p. 4-pg., 2021-04-08. |
| Abstract | |
The decay of multicharged vortices in trapped Bose-Einstein condensates may lead to a disordered vortex state consistent with the Vinen regime of turbulence, characterized by an absence of large-scale flow and an incompressible kinetic energy spectrum E proportional to k(-1). In this work, we study numerically the dynamics of a three-dimensional harmonically trapped Bose-Einstein condensate excited to a Vinen regime of turbulence through the decay of two doubly-charged vortices. First, we study the momentum distribution and observe the emergence of a power-law behavior n(k) proportional to k(-3) consistent with the coexistence of wave turbulence. We also study the kinetic energy and particle fluxes, which allows us to identify a direct particle cascade associated with the turbulent stage. (AU) | |
| 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 |
| 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 |