Limitation of the Lee-Huang-Yang interaction in forming a self-bound state in Bose-Einstein condensates

Sandeep Gautam, S. K. Adhikari

The perturbative Lee-Huang-Yang (LHY) interaction proportional to $n^{3/2}$, where $n$ is the density, creates an infinitely repulsive potential at the center of a Bose-Einstein co…