Dynamics of one-dimensional large and small static quantum droplets

Abstract

The structure and dynamics of one-dimensional binary Bose gases forming quantum
droplets is studied by solving the corresponding amended Gross-Pitaevskii equation. Two
physically different regimes are identified, corresponding to small droplets of an
approximately Gaussian shape and large “puddles” with a prominent flat-top plateau. Small
droplets collide quasi-elastically, featuring the soliton-like behavior.