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Structure of A=10-13 nuclei with two- plus three-nucleon interactions from chiral effective field theory

P. Navratil·V. G. Gueorguiev·J. P. Vary·W. E. Ormand·A. Nogga
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Abstract

Properties of finite nuclei are evaluated with two-nucleon (NN) and three-nucleon (NNN) interactions derived within chiral effective field theory (EFT). The nuclear Hamiltonian is fixed by properties of the A=2 system, except for two low-energy constants (LECs) that parameterize the short range NNN interaction. We constrain those two LECs by a fit to the A=3 system binding energy and investigate sensitivity of 4He, 6Li, 10,11B and 12,13C properties to the variation of the constrained LECs. We identify a preferred choice that gives globally the best description. We demonstrate that the NNN interaction terms significantly improve the binding energies and spectra of mid-p-shell nuclei not just with the preferred choice of the LECs but even within a wide range of the constrained LECs. At the same time, we find that a very high quality description of these nuclei requires further improvements to the chiral Hamiltonian.

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P. Navratil, V. G. Gueorguiev, J. P. Vary, W. E. Ormand, A. Nogga. 2007-01-14. Structure of A=10-13 nuclei with two- plus three-nucleon interactions from chiral effective field theory. https://doi.org/10.1103/physrevlett.99.042501

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