| Title: | Nuclear Energy Density Optimization: Large Deformations |
| Authors: | Markus Kortelainen, Jordan McDonnell, Witold Nazarewicz, Paul-Gerhard Reinhard, Jason Sarich, Nicolas Schunck, Mario Stoitsov, Stefan Wild |
| Abstract: | 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 240Pu and neighboring nuclei. |
| Keywords: | |
| Thanks: | This work was supported by the U.S. Department of Energy under Contract Nos. DE-FC02-09ER41583 (UNEDF SciDAC Collaboration), DE-FG02-96ER40963 (University of Tennessee), DE-FG52-09NA29461 (the Stewardship Science Academic Alliances program), DE-AC07-05ID14517 (NEUP grant sub award 00091100), and DE-AC0Z-06CA11357 (Argonne National Laboratory), and was partly performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Funding was also provided by the U.S.\ Department of Energy Office of Science, Nuclear Physics Program pursuant to Contract DE-AC52-07NA27344 Clause B-9999, Clause H-9999, and the American Recovery and Reinvestment Act, Pub. L. 111-5. Computational resources were provided through an INCITE award ''Computational Nuclear Structure'' by the National Center for Computational Sciences (NCCS) and National Institute for Computational Sciences (NICS) at Oak Ridge National Laboratory, and through an award by the Laboratory Computing Resource Center at Argonne National Laboratory. |
| Status: | Appears in Physical Review C, Vol. 85 (2), pp. 024304, 2012. Formerly Mathematics and Computer Science Division Preprint ANL/MCS-P1977-1111. |
| Link: | [PDF available from PRC],[earlier version available on the arXiv] |
| BibTeX: | @article{UNEDF1,
title = {Nuclear energy density optimization: Large deformations},
author = {M. Kortelainen and J. McDonnell and W. Nazarewicz and P.-G. Reinhard
and J. Sarich and N. Schunck and M.V. Stoitsov and S.M. Wild},
journal = "Physical Review C",
volume = "85",
number = "2",
year = "2012",
pages = "024304",
doi = "10.1103/PhysRevC.85.024304"
}
|