Modulated amplitude waves with nonzero phases in Bose-Einstein condensates

Details Modulated amplitude waves with nonzero phases in Bose-Einstein condensates Modulated amplitude waves with nonzero phases in Bose-Einstein condensates

2011-03-28

arxiv.org/abs/1103.5277v2

Nonlinear Sciences

Chaotic Dynamics

17 pages, 2 figures

Scientific paper

In this paper we give a frame for application of the averaging method to Bose-Einstein condensates (BECs) and obtain an abstract result upon the dynamics of BECs. Using aver- aging method, we determine the location where the modulated amplitude waves (periodic or quasi-periodic) exist and we also study the stability and instability of modulated amplitude waves (periodic or quasi-periodic). Compared with the previous work, modulated amplitude waves studied in this paper have nontrivial phases and this makes the problem become more diffcult, since it involves some singularities.

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