# Square wave oscillation of soliton in double-well potential trapped BEC

@article{Ma2019SquareWO, title={Square wave oscillation of soliton in double-well potential trapped BEC}, author={Decheng Ma and Chenglong Jia}, journal={arXiv: Quantum Gases}, year={2019} }

We numerically investigate the soliton tunnelling process in double-well potential trapped Bose-Einstein condensate. Comparing with the usual low energy few particle tunnelling process, we find that the soliton tunnelling leads to massive particle transport between two wells. The {population imbalance} between two wells is not evolving sinusoidally with the time as the Josephson plasma oscillation, but shows a higher density contrast square-wave pattern due to the reflections at the trapping…

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