2018 Fiscal Year Research-status Report
Ab initio nuclear Density Functional Theory with uncertainty quantification from Functional Renormalization Group in Kohn-Sham scheme
| Project/Area Number |
18K13549
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
LIANG HAOZHAO 国立研究開発法人理化学研究所, 仁科加速器科学研究センター, 専任研究員 (50729225)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Keywords | 原子核密度汎関数法 |
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| Outline of Annual Research Achievements |
The key strategies of the present study on ab initio nuclear density functional theory from functional renormalization group in Kohn-Sham scheme have been demonstrated by using the zero-dimensional phi^4 theory. The results have been published in [Phys. Lett. B 779 (2018) 436].
For the Coulomb energy density functional for atomic nuclei, we have realized the Coulomb exchange functional with the generalized gradient approximation for the self-consistent Skyrme Hartree-Fock calculations. The results have been published in [Phys. Rev. C 97 (2018) 044319; 99 (2019) 024309].
To connect the state-of-the-art nuclear ab initio calculations and nuclear density functional theory, we proposed the evolution of spin-orbit splitting in neutron drops is one of the best guidance to constrain the strengths of the tensor force in nuclear energy density functional [Phys. Rev. C 97 (2018) 054312].
For the interdisciplinary application to the astrophysical rapid-neutron capture process, a Bayesian neural network method has been developed and applied to the predictions of nuclear beta-decay half-lives with reasonable theoretical uncertainty evaluations [arXiv:1810.03156].
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
The research is progressing rather smoothly with the supports of RIKEN and several international collaborations.
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| Strategy for Future Research Activity |
The research will be carried out as plans. In particular, in FY2019, we will focus on the development of our Kohn-Sham functional renormalization group method to the 1+1 dimensional nuclei. Investigations and applications of the relevant studies will also be processed in parallel.
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| Causes of Carryover |
It is better to buy a new computer in FY2019 in stead of FY2018, because the computation resources were enough in FY2018.
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