En col·laboració amb la Universitat Autònoma de Barcelona (UAB), la Universitat de Barcelona (UB) i l’Institut de Ciències Fotòniques (ICFO)

We investigate the dynamical properties of 1D solitary waves in confined immiscible mixtures of Bose-Einstein condensates with repulsive interparticle interactions. We perform numerical simulations of the coupled Gross-Pitaevskii equations for two-components harmonically trapped in presence of dark and grey solitons, and we study the reflection and transmission of this matter wave after the collision with the interphase between the two immiscible species. Our numerical results show different scenarios depending on the ratio between the interspecies and intraspecies strength interactions, where the immiscibility plays an important role in the dynamical behaviour of the matter wave.