Clustering of Four-Component Unitary Fermions
Abstract
Ab initio nuclear physics tackles the problem of strongly interacting four-component fermions. The same setting could foreseeably be probed experimentally in ultracold atomic systems, where two- and three-component experiments have led to major breakthroughs in recent years. Both due to the problem's inherent interest and as a pathway to nuclear physics, in this Letter we study four-component fermions at unitarity via the use of quantum Monte Carlo methods. We explore novel forms of the trial wave function and find one which leads to a ground state of the eight-particle system whose energy is almost equal to that of two four-particle systems. We investigate the clustering properties involved and also extrapolate to the zero-range limit. In addition to being experimentally testable, our results impact the prospects of developing nuclear physics as a perturbation around the unitary limit.
Cite
@article{arxiv.1908.04288,
title = {Clustering of Four-Component Unitary Fermions},
author = {William G. Dawkins and J. Carlson and U. van Kolck and Alexandros Gezerlis},
journal= {arXiv preprint arXiv:1908.04288},
year = {2020}
}
Comments
6+1 pages, 3+1 figures; v2 corresponds to published version