Vortex lattices in a Rydberg-dressed condensate with Lee-Huang-Yang correction

CHING-WEI WANG^1*

¹Physics of department, National Taiwan of Normal University, Taipei, Taiwan

* Presenter:CHING-WEI WANG, email:42yankeesphy@gmail.com

Under high rotational frequency, we numerically investigate the vortex lattices in a two-dimensional Rydberg-dressed Bose-Einstein condensate taking into account the effect of Lee-Huang-Yang (LHY) quantum corrections. In the absence of LHY effect, hexagonal, square, striped, and honeycomb lattices can occur upon the increase of the long-range interaction. The change of lattice pattern can be understood in the context of superfluid-supersolid transition. In the presence of LHY effect, the competition between the LHY effect and the long-range interaction can result in rich vortex patterns. For example, some exhibit four-fold rotational symmetry with both single- and multiple-circulation vortices coexisting. We provide a systematic way to understand these patterns.

Keywords: Lee-Huang-Yang quantum correction , Rydberg-dressed BEC, Long-range BEC