Vortex Dynamics in Trapped Bose-Einstein Condensate
Vortex Dynamics in Trapped Bose-Einstein Condensate
复制标题
俘获玻色-爱因斯坦凝聚中的涡动力学
DOI:
10.1007/s10909-008-9811-9
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发表时间:
2008
影响因子:
2
通讯作者:
Madarassy E
中科院分区:
文献类型:
--
作者:
Madarassy E
We have performed numerical simulations of various vortex configurations in a trapped Bose-Einstein condensate by solving the two-dimensional Gross-Pitaevskii equation in the presence of a simple model of interaction between the condensate and the finite temperature thermal cloud that surrounds it. In that interaction the non-condensed thermal cloud acts as a source of dissipation with a damping effect of excitations. In the case of a single vortex and a vortex-anti vortex pair, we have found that the path of the vortices depends on the initial position, the initial separation distance if the case of two vortices and dissipation.This motion is periodic and it was found that sound waves are created by vortex motion; the intensity was stronger when the initial vortex separation distance was smaller. We have calculated the sound energy as the difference between the kinetic energy and the vortex energy. With no dissipation the vortices followed the same path with a slight oscillation due to the sound waves. We found that the smaller the initial vortex separation distance d0 is, the larger the sound production.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
C. Gardiner;P. Zoller;R. Ballagh;M. Davis
影响因子:
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作者:
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影响因子:
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通讯作者:
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DOI:
--
发表时间:
2003
期刊:
影响因子:
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作者:
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通讯作者:
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