In this thesis, we present theoretical studies on the miscible-immiscible transitionof BEC mixtures in the presence of interspecies atomic p-wave interaction. Exploiting asingle-channel p-wave interaction model, we study ground state properties of BEC mix-tures by variational and numerical solutions of the mean-field equations. We find severalnovel characteristics of BEC phase separations, unique to the p-wave case. In particular,ourresultsshowthatpositive p-waveinteractionsbetweenBECmixtureswouldenhanacetheir miscibility. Our work provides an alternative tool to control miscibility of BEC mix-tures, and can be implemented easily with p-wave Feshbach resonances in experiments. |