Effect of a barrier potential on soliton dynamical characteristics in condensates |
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Authors: | Li Jin-Hui |
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Institution: | Mathematics and Science Department, Hunan First Normal University, Changsha 410205, China |
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Abstract: | By using the multiple-scale method, this paper analytically
studies the effect of a barrier potential on the dynamical
characteristics of the soliton in Bose--Einstein condensates. It
is shown that a stable soliton is exhibited at the top of the
barrier potential and the region of the absence of the barrier
potential. Meanwhile, it is found that the height of the barrier
potential has an important effect on the dark soliton dynamical
characteristics in the condensates. With the increase of height of
the barrier potential, the amplitude of the dark soliton becomes
smaller, its width is narrower, and the soliton propagates more slowly. |
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Keywords: | Bose--Einstein condensates solitons barrier potential |
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