Variational Study of3HeDroplets

We report variational calculations of energies of ${}^3{\mathrm{He}}_N$ droplets ( $20\le N\le 40$), using Aziz atom-atom interactions. The trial wave function has a simple structure, combining two- and three-body correlation functions coming from a translationally invariant configuration-interaction description, superimposed to a Jastrow-type correlated wave function with backflow. We find that the smallest bound drop has $N=35\mathrm{}$ atoms, and that for each $N$ the minimum energy states have the highest spin values.