2016/07/31 by T. Congy, A. M. Kamchatnov, N. Pavloff · 1 citation
Physics and Astronomy · #cond-mat.quant-gas #nlin.PS
paper · pdf · doi:10.21468/scipostphys.1.1.006
published as SciPost Phys. 1, 006 (2016) · Submission to SciPost
arxiv created 2016/10/10 · arxiv updated 2018/04/20
We study one dimensional mixtures of two-component Bose-Einstein condensates in the limit where the intra-species and inter-species interaction constants are very close. Near the mixing-demixing transition the polarization and the density dynamics decouple. We study the nonlinear polarization waves, show that they obey a universal (i.e., parameter free) dynamical description, identify a new type of algebraic soliton, explicitly write simple wave solutions, and study the Gurevich-Pitaevskii problem in this context.