Title :
Non-equilibrium flows and superfluid turbulence in finite temperature dilute gas Bose-Einstein condensates
Author :
Davis, Matthew J. ; Wright, Tod M. ; Simula, Tapio ; Feng, Chao ; Garrett, Michael C.
Author_Institution :
Sch. of Math. & Phys., Univ. of Queensland, Brisbane, QLD, Australia
fDate :
Aug. 28 2011-Sept. 1 2011
Abstract :
Dilute gas Bose-Einstein condensates (BECs) are an example of a superfluid, and exhibit many of the same phenomena as the strongly interacting superfluid helium. However, their isolation from the environment combined with their inhomogeneous density profiles make it difficult to observe some phenomena, such as the thermo-mechanical effect, in experiments. Here we perform dynamical simulations of a finite temperature Bose-Einstein condensate coupled to spatially separated heat and particle reservoirs to observe such non-equilibrium superfluid phenomena. We analyse the resulting steady-state non-equilibrium flows in the BEC, and consider the prospect of observing sustained superfluid turbulence.
Keywords :
Bose-Einstein condensation; heat transfer; nonequilibrium flow; superfluidity; turbulence; Bose-Einstein condensates; finite temperature dilute gas; inhomogeneous density profiles; nonequilibrium superfluid phenomena; spatially separated heat reservoirs; spatially separated particle reservoirs; steady-state nonequilibrium flows; strongly interacting superfluid helium; superfluid isolation; superfluid turbulence; thermomechanical effect; Geometry; Heating; Helium; Reservoirs; Steady-state; Thermodynamics; Thermomechanical processes;
Conference_Titel :
Quantum Electronics Conference & Lasers and Electro-Optics (CLEO/IQEC/PACIFIC RIM), 2011
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4577-1939-4
DOI :
10.1109/IQEC-CLEO.2011.6194108