Supersolidity in Two-Dimensional Trapped Dipolar Droplet Arrays
Supersolidity in Two-Dimensional Trapped Dipolar Droplet Arrays
We theoretically investigate the ground states and the spectrum of elementary excitations across the superfluid to droplet crystallization transition of an oblate dipolar Bose-Einstein condensate. We systematically identify regimes where spontaneous rotational symmetry breaking leads to the emergence of a supersolid phase with characteristic collective excitations, such as the Higgs …