From nuclear to unnuclear physics
Abstract
We provide a brief commentary on recent work by Hammer and Son on the scaling behavior of nuclear reactions involving the emission of several loosely bound neutrons. In this work they discover a regime, termed unnuclear physics, in which these reactions are governed by an approximate conformal symmetry of the nuclear force. Remarkably, the scaling exponents that govern nuclear reactions can be related to the energies of ultracold atomic drops confined in harmonic potentials. We also comment on the importance and the limitations of this approximate symmetry in the physics of neutron stars.
 Publication:

Proceedings of the National Academy of Science
 Pub Date:
 September 2021
 DOI:
 10.1073/pnas.2113775118
 arXiv:
 arXiv:2109.06924
 Bibcode:
 2021PNAS..11813775S
 Keywords:

 Nuclear Theory;
 Condensed Matter  Quantum Gases
 EPrint:
 7 pages, 1 figure