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Pogosov, W V Okayama University
Machida, K Okayama University
We study the effect of thermal fluctuations on homogeneous infinite Bose-Einstein condensate with spin F=2 in the cyclic state, when atoms occupy three hyperfine states with m(F)=0,+/- 2. We use both the approach of small-amplitude oscillations and mapping of our model on the sine-Gordon model. We show that thermal fluctuations lead to the existence of the rough phase in one- and two-dimensional systems, when the presence of kinks is favorable. The structure and energy of a single kink are found. We also discuss the effect of thermal fluctuations on spin degrees of freedom in F=1 condensate.
Digital Object Identifer:10.1103/PhysRevA.74.023611
Published with permission from the copyright holder. This is the institute's copy, as published in Physical Review A, August 2006, Volume 74, Issue 2, Pages 6.
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Physical Review A
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