Dynamics of Vortex Formation in Merging Bose-Einstein Condensate Fragments
نویسندگان
چکیده
R. Carretero-González, B. P. Anderson, P. G. Kevrekidis, D. J. Frantzeskakis, and C. N. Weiler Nonlinear Dynamical Systems Group,*Department of Mathematics and Statistics, and Computational Science Research Center, San Diego State University, San Diego, California 92182-7720, USA College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA Department of Mathematics and Statistics, University of Massachusetts, Amherst, Massachusetts 01003-4515, USA Department of Physics, University of Athens, Panepistimiopolis, Zografos, Athens 15784, Greece Received 2 November 2007; published 27 March 2008
منابع مشابه
Vortex Nucleation and Array Formation in a Rotating Bose-Einstein Condensate
We study the dynamics of vortex lattice formation of a rotating trapped Bose-Einstein condensate by numerically solving the two-dimensional GrossPitaevskii equation, and find that the condensate undergoes elliptic deformation, followed by unstable surface-mode excitations before forming a quantized vortex lattice. The dependence of the number of vortices on the rotation frequency is obtained. P...
متن کاملFormation and decay of vortex lattices in Bose-Einstein condensates at finite temperatures.
The dynamics of vortex lattices in stirred Bose-Einstein condensates have been studied at finite temperatures. The decay of the vortex lattice was observed nondestructively by monitoring the centrifugal distortions of the rotating condensate. The formation of the vortex lattice could be deduced from the increasing contrast of the vortex cores observed in ballistic expansion. In contrast to the ...
متن کاملVortex Lattice Formation in a Rotating Bose-Einstein Condensate
(Dated: April 14, 2008) We study the dynamics of vortex lattice formation of a rotating trapped Bose-Einstein condensate by numerically solving the two-dimensional Gross-Pitaevskii equation, and find that the condensate undergoes elliptic deformation, followed by unstable surface-mode excitations before forming a quantized vortex lattice. The origin of the peculiar surface-mode excitations is i...
متن کاملVortex Lattices in a Stirred Bose-einstein Condensate
We stir with a focused laser beam a Bose-Einstein condensate of 87 Rb atoms confined in a magnetic trap. We observe the formation of a single vortex for a stirring frequency exceeding a critical value. At larger rotation frequencies we produce states of the condensate for which up to eleven vortices are simultaneously present. We present measurements of the decay of a vortex array once the stir...
متن کاملQuantized Vortex States and Dynamics in Bose-einstein Condensates
In this thesis, we analytically and numerically study quantized vortex states aswell as their dynamics in rotating Bose-Einstein condensate at extremely low tem-perature.We present an efficient method–gradient flow with discrete normalization tofind the stationary solutions of the Gross-Pitaevskii equation and coupled Gross-Pitaevskii equations. We give a mathematical justif...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008