
TL;DR
This paper explores how three-body correlations, especially Efimov effects, can lead to self-bound quantum droplets in Bose-Einstein and Fermi-Dirac systems under specific dilute conditions.
Contribution
It introduces the concept that three-body effects can dominate the energy density, enabling the formation of self-bound quantum droplets in dilute quantum gases.
Findings
Three-body correlations can dominate the energy in dilute quantum gases.
Self-bound droplets can form in Bose and Fermi systems due to Efimov effects.
Conditions for droplet formation depend on the diluteness parameter |^3.
Abstract
In the limit when the two-body scattering length is negative and much larger than the effective two-body interaction radius the contribution to the ground state energy due to the three-body correlations is given by the Efimov effect. For particular values of the diluteness parameter the three-body contribution can become the dominant term of the energy density functional. Under these conditions both Bose-Einstein and Fermi-Dirac systems could become self-bound and either boson droplets or fermion ``designer nuclei'' of various sizes and densities could be manufactured.
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