Symmetry breaking in the collisions of double channel BEC solitons

2013/07/07 by Nguyễn Việt Hùng, Nguyen Viet Hung, Hung, Nguyen Viet +6
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #Nonlinear Photonic Systems #Optical Network Technologies #cond-mat.quant-gas

paper · pdf · doi:10.48550/arxiv.1307.1855

6 figures

arxiv created 2013/07/07 · arxiv updated 2013/07/09

Abstract

We investigate an attractive Bose-Einstein condensate in two coupled one dimensional channels. In this system a stable double channel soliton can be formed. It is symmetric for small interaction parameters and asymmetric for large ones. We study this symmetry breaking phenomenon in detail. Next, we investigate the dynamics of symmetric double channel soliton collisions. For sufficiently strong interactions we observe spontaneous symmetry breaking during the collision. Approximate considerations based on two different methods, Bogoliubov and variational, are used to describe this effect. The results are compatible.

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