Three-body forces and Efimov physics in nuclei and atoms

Abstract

This review article presents historical developments and recent advances in our understanding on the three-body forces and Efimov physics, from an interdisciplinary viewpoint encompassing nuclear physics and cold atoms. Theoretical attempts to elucidate the three-body force with the chiral effective field theory are explained, followed by an overview of experiments aimed at observing signatures of the nuclear three-body force. Some recent experimental and theoretical works in the field of cold atoms devoted to measuring and engineering three-body forces among atoms are also presented. As a phenomenon arising from the three-body effect, Efimov physics in both cold atoms and nuclear systems is reviewed.

28 pages, 11 figures

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• Possible halo structure of ${}^{62,72}$Ca by forbidden-state-free locally peaked Gaussians
• Universal geometry of two-neutron halos and Borromean Efimov states close to dissociation

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• Chiral symmetry and peripheral neutron-$\alpha$ scattering
• Nucleon Short-Range Correlations and High-Momentum Dynamics: Implications on the Equation of State of Dense Matter
• Quantum sensing of even- versus odd-body interactions
• Effective field theory for weakly bound two-neutron halo nuclei: corrections from neutron-neutron effective range
• Universal Efimov spectra and fermionic doublets in highly mass-imbalanced cold-atom mixtures with van der Waals and dipole interactions
• Stabilization of three-body resonances to bound states in a continuum
• From three-body resonances to bound states in a continuum: pole trajectories