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arXiv · 1910.12627

Energies and radii of light nuclei around unitarity

Sebastian König
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Abstract

Light nuclei fall within a regime of universal physics governed by the fact that the two-nucleon scattering lengths are large compared to the typical nuclear interaction range set by one-pion exchange. This places nuclear physics near the so-called unitarity limit in which the scattering lengths are exactly infinite. Effective field theory provides a powerful theoretical framework to capture this separation of scales in a systematic way. It is shown here that the nuclear force can be constructed as a perturbative expansion around the unitarity limit and that this expansion has good convergence properties for both the binding energies of $A=3,4$ nuclei as well as for the radii of these states.

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Sebastian König. 2019-10-28. Energies and radii of light nuclei around unitarity. https://doi.org/10.1140/epja%2Fs10050-020-00098-9

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