Physics – Condensed Matter – Quantum Gases
Scientific paper
2011-04-14
Physics
Condensed Matter
Quantum Gases
13 pages, 7 figures
Scientific paper
We study the decay of a dark soliton in a homogeneous Bose-Einstein condensate. We give an analytical treatment of a decaying soliton, deriving an expression for the soliton velocity and decay time in the absence of thermal noise. We test the result against numerical simulations of a spatially confined system and find good agreement in the regime of low temperature ($k_BT\ll \mu$). Thermal fluctuations are found to slow the escape of the soliton, extending its lifetime beyond the predictions of the noise-free theory; the effect becomes significant at a characteristic temperature $k_BT\sim \mu$. This stabilization by noise allows us to infer an analytical lower bound for the dark soliton decay time.
Bradley Alexander S.
Wright John K.
No associations
LandOfFree
Stochastic longevity of a dark soliton in a finite-temperature Bose-Einstein condensate does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stochastic longevity of a dark soliton in a finite-temperature Bose-Einstein condensate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stochastic longevity of a dark soliton in a finite-temperature Bose-Einstein condensate will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-165337