Finite temperature dynamics of vortices in Bose-Einstein condensates
arXiv:1309.6205 · doi:10.1103/PhysRevA.89.013612
Abstract
We study the dynamics of a single and a pair of vortices in quasi two-dimensional Bose-Einstein condensates at finite temperatures. We use the stochastic Gross-Pitaevskii equation, which is the Langevin equation for the Bose-Einstein condensate, to this end. For a pair of vortices, we study the dynamics of both the vortex-vortex and vortex-antivortex pairs, which are generated by rotating the trap and moving the Gaussian obstacle potential, respectively. Due to thermal fluctuations, the constituent vortices are not symmetrically generated with respect to each other at finite temperatures. This initial asymmetry coupled with the presence of random thermal fluctuations in the system can lead to different decay rates for the component vortices of the pair, especially in the case of two corotating vortices.
8 pages, 10 figures
References in corpus (10)
- Spontaneous vortices in the formation of Bose-Einstein condensates
- Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
- Observation of scale invariance and universality in two-dimensional Bose gases
- Guiding-center dynamics of vortex dipoles in Bose-Einstein condensates
- Semiclassical theory of the quasi two-dimensional trapped Bose gas
- Probing the classical field approximation - thermodynamics and decaying vortices
- Observable Vortex Properties in Finite Temperature Bose Gases
- Vortex dynamics in trapped Bose-Einstein condensate
- Spatial Correlation Functions of one-dimensional Bose gases at Equilibrium
- Collective dynamics of vortices in trapped Bose-Einstein condensates
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