Effective interactions between two impurities in quasi-two-dimensional dipolar Bose–Einstein condensates

Fu-Lin Deng,Tao Shi,Su Yi

Figure 1. Schematic diagrams of (a) two impurities immersed in a ultracold quasi-2D dipolar gas and (b) the typical excitation spectrum of dipolar BECs under different χ's. Roton excitation emerges under sufficiently large DDI strength.