This title appears in the Scientific Report :
2023
Please use the identifier:
http://hdl.handle.net/2128/34230 in citations.
Please use the identifier: http://dx.doi.org/10.3389/fphy.2023.1098262 in citations.
Uncertainties in ab initio nuclear structure calculations with chiral interactions
Uncertainties in ab initio nuclear structure calculations with chiral interactions
We present theoretical ground state energies and their uncertainties for p-shell nuclei obtained from chiral effective field theory internucleon interactions as a function of chiral order, fitted to two- and three-body data only. We apply a Similary Renormalization Group transformation to improve th...
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Personal Name(s): | Maris, P. (Corresponding author) |
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Le, H. / Nogga, Andreas / Roth, R. / Vary, J. P. | |
Contributing Institute: |
Theorie der Starken Wechselwirkung; IAS-4 Theorie der starken Wechselwirkung; IKP-3 |
Published in: | Frontiers in physics, 11 (2023) S. 1098262 |
Imprint: |
Lausanne
Frontiers Media
2023
|
DOI: |
10.3389/fphy.2023.1098262 |
Document Type: |
Journal Article |
Research Program: |
Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.3389/fphy.2023.1098262 in citations.
We present theoretical ground state energies and their uncertainties for p-shell nuclei obtained from chiral effective field theory internucleon interactions as a function of chiral order, fitted to two- and three-body data only. We apply a Similary Renormalization Group transformation to improve the numerical convergence of the many-body calculations, and discuss both the numerical uncertainties arising from basis truncations and those from omitted induced many-body forces, as well as chiral truncation uncertainties. With complete Next-to-Next-to-Leading (N2LO) order two- and three-body interactions, we find significant overbinding for the ground states in the upper p-shell, but using higher-order two-body potentials, in combination with N2LO three-body forces, our predictions agree with experiment throughout the p-shell to within our combined estimated uncertainties. The uncertainties due to chiral order truncation are noticeably larger than the numerical uncertainties, but they are expected to become comparable to the numerical uncertainties at complete N3LO. |