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New-generation Monte Carlo shell model for the K computer era

Year: 2012
Type: article
Abstract: We present a newly enhanced version of the Monte Carlo shell-model (MCSM) method by incorporating the conjugate gradient method and energy-variance extrapolation. This new method enables us to perform large-scale shell-model calculations that the direct diagonalization method cannot reach. This new-generation framework of the MCSM provides us with a powerful tool to perform very advanced large-scale shell-model calculations on current massively parallel computers such as the K computer. We discuss the validity of this method in ab initio calculations of light nuclei, and propose a new method to describe the intrinsic wave function in terms of the shell-model picture. We also apply this new MCSM to the study of neutron-rich Cr and Ni isotopes using conventional shell-model calculations with an inert 40Ca core and discuss how the magicity of N=28,40,50 remains or is broken.
DOI: 10.1093/ptep/pts012
Authors: Noritaka Shimizu, Takashi Abe, Yusuke Tsunoda, Yutaka Utsuno, Tooru Yoshida, Takahiro Mizusaki, Michio Honma, Takaharu Otsuka
Institutions: Center for Nuclear Study, The University of Tokyo, The University of Tokyo, Japan Atomic Energy Agency, Advanced Science Research Center, Senshu University, University of Aizu, National Superconducting Cyclotron Laboratory, Michigan State University
Language: English
Open Access status: hybrid
Estimated APC paid: $979
OpenAlex ID: W2110082916
FWCI: 5.178
Cites: 74
Cited by: 156
Related to: 10