Abstract
We use phase-equivalent transformations to adjust off-shell properties of similarity renormalization group evolved chiral effective field theory NN interaction (Idaho N3LO) to fit selected binding energies and spectra of light nuclei in an ab exitu approach. We then test the transformed interaction on a set of additional observables in light nuclei to verify that it provides reasonable descriptions of these observables with an apparent reduced need for three- and many-nucleon interactions.
Highlights
An ab initio description of nuclear structure and reactions is one of the mainstreams of modern nuclear theory [1]
A very important step in the theory of inter-nucleon interactions in nuclei is the emergence of realistic N N and N N N interactions tied to QCD via chiral effective field theory [16,17,18,19,20]
Ab initio many-body studies benefit from the use of recently developed purely two-nucleon interactions such as INOY (Inside Nonlocal Outside Yukawa) [23, 24] and JISP (Jmatrix Inverse Scattering Potential) [25,26,27,28] types which are fitted to the N N data and to binding energies of A = 3 and heavier nuclei. These N N interactions are supported by the work of Polyzou and Glockle [29] who demonstrated that a given N N interaction is equivalent at the A = 3 level to some other N N interaction augmented by N N N interactions, where the two N N interactions are related through a phase-equivalent transformation (PET)
Summary
An ab initio description of nuclear structure and reactions is one of the mainstreams of modern nuclear theory [1]. The ab initio theory requires a high-quality realistic inter-nucleon interaction providing an accurate description of N N scattering data and predictions for binding energies, spectra and other observables in light nuclei.
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