Clustering of Four-Component Unitary Fermions

William G. Dawkins, J. Carlson, U. Van Kolck, Alexandros Gezerlis

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish (US)
Article number143402
JournalPhysical review letters
Volume124
Issue number14
DOIs
StatePublished - Apr 10 2020

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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