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Energies and radii of light nuclei around unitarity

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arxiv 1910.12627 v1 pith:6GWHL5X2 submitted 2019-10-28 nucl-th

Energies and radii of light nuclei around unitarity

classification nucl-th
keywords nuclearnucleiunitarityaroundenergiesexpansionlengthslight
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Three- and four-boson systems expanded around the unitarity limit: Application to $^4$He

    cond-mat.quant-gas 2026-05 unverdicted novelty 6.0

    EFT study of ^4He trimers and tetramers around unitarity limit yields binding energies and radii that converge to phenomenological potential results after including finite-range and four-body corrections.

  2. Perturbative calculations of light nuclei up to N$^3$LO in chiral effective field theory

    nucl-th 2026-04 unverdicted novelty 5.0

    Perturbative N3LO calculations in chiral EFT with RG-guided power counting yield robust predictions for light nuclei energies when calibrated on the tritium binding energy.

  3. Coulomb Corrections to Three-Nucleon Moments

    nucl-th 2026-05 unverdicted novelty 4.0

    Pionless EFT calculations find unexpectedly small O(alpha) Coulomb corrections to three-nucleon magnetic moments and GT matrix elements, yielding a fitted prediction for the proton-proton fusion reduced matrix element...

  4. Coulomb Effects and Wigner-SU(4) Symmetry in He-3 Charge and Magnetic Properties

    nucl-th 2026-04 unverdicted novelty 4.0

    Non-perturbative Coulomb corrections in LO pionless EFT give a 0.85(3) MeV He-3/H-3 binding split, 0.043(2) fm charge-radius shift, 0.036(2) fm magnetic-radius shift, and -0.0041(1) μ_N moment shift.