Effects of interaction imbalance in a strongly repulsive one-dimensional Bose gas. (arXiv:1802.02010v1 [cond-mat.quant-gas])

We calculate the spatial distributions and the dynamics of a few-body
two-component strongly interacting Bose gas confined to an effectively
one-dimensional trapping potential. We describe the densities for each
component in the trap for different interaction and population imbalances. We
calculate the time evolution of the system and show that, for a certain ratio
of interactions, the minority population travels through the system as an
effective wave packet.

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