Nuclear energy density optimization: Large deformations

By Markus Kortelainen, J. McDonnell, Witold Nazarewicz, Paul-Gerhard Reinhard, Jason Sarich, Nicolas Schunck, M. Stoitsov, Stefan M. Wild. 2011

285 citations recorded by the source corpus.

A new Skyrme-like energy density suitable for studies of strongly elongated nuclei has been determined in the framework of the Hartree-Fock-Bogoliubov theory using the recently developed model-based, derivative-free optimization algorithm POUNDerS. A sensitivity analysis at the optimal solution has revealed the importance of states at large deformations in driving the parameterization of the functional. The good agreement with experimental data on masses and separation energies, achieved with the previous parameterization UNEDF0, is largely preserved. In addition, the new energy density UNEDF1 gives a much improved description of the fission barriers in ^{240}Pu and neighboring nuclei.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/6a8f5bd166b75852f9e728119c6348b79f845f29

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In Atomic and Molecular Physics, and Optics

In Nuclear and High Energy Physics

Citations in the corpus

A Bayesian approach for parameter estimation and prediction using a computationally intensive model (2014, methodology): “tion) and model-based prediction. In this paper, we apply the Bayesian model calibration approach to the nuclear DFT model described in McDonnell et al. of this volume, as well as in other references [10, 11]. In order to streamline the presentation, we focus on nuclear masses for a number of spheri”
Error Estimates of Theoretical Models: a Guide (2014, methodology): “Optimization of nuclear energy density functionals (EDFs) using different data categories were carried out for nuclei [17, 26, 27, 21] and for nuclei and neutron stars [28].”
Future of nuclear fission theory (2020, methodology): “To date, the EDFs most commonly used in fission studies have been adjusted to fission isomer excitation energies (Kortelainen et al 2012) or fission barriers (Bartel et al 1982, Berger et al 1991, Goriely et al 2007), with the exception of the relativistic functionals PC-PK1 (Zhao et al 2010) and…”