“…In particular, DDI may be positive in one direction and negative in another [71]. Dipolar BECs have been investigated in broad contexts, such as the existence of the quantum liquid stabilized by quantum fluctuations, spin-orbit coupling, physics of lattices beyond the standard Bose-Hubbard model, parametric oscillations, roton excitations, modulation instability, anisotropic solitons, vortex scissors oscillations, structure formation, self-bound droplets in a doubly dipolar BEC, and dipolar BEC in a bubble trap [72][73][74][75][76][77][78][79][80][81][82][83][84][85].…”