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Title: Ab initio description of collectivity for sd shell nuclei
Authors: Saxena A.
Kumar A.
Kumar V.
Srivastava, Praveen Chandra
Suzuki T.
Published in: Hyperfine Interactions
Abstract: In the present work, we have reported shell model results for open shell nuclei Ne, Mg and Si isotopes with 10 ≤ N ≤ 20 in sd-shell model space. We have performed calculations in sd shell with two ab initio approaches: in-medium similarity renormalization group (IM-SRG) and coupled-cluster (CC) theory. We have also performed calculations with phenomenological USDB interaction and chiral effective field theory based CEFT interaction. The results for rotational spectra and B(E2;21+→01+) transitions are reported for even-mass isotopes. The IM-SRG and CC results are in reasonable agreement with the experimental data except at N = 20. This demonstrates a validity of ab initio description of deformation for doubly open-shell nuclei for sd shell. To see the importance of pf orbitals, we have also compared our results with SDPF-MU interaction by taking account of 2p − 2h and 4p − 4h configurations in sd-pf -shell model space. © 2019, Springer Nature Switzerland AG.
Citation: Hyperfine Interactions (2019), 240(1): -
Issue Date: 2019
Publisher: Springer International Publishing
Keywords: Collectivity
Effective interactions
Island of inversion
Shell model
ISSN: 3043843
Author Scopus IDs: 57209145804
Author Affiliations: Saxena, A., Department of Physics, Indian Institute of Technology, Roorkee, 247667, India
Kumar, A., Department of Physics, Indian Institute of Technology, Roorkee, 247667, India
Kumar, V., Department of Physics, Central University of Kashmir, Ganderbal, 191201, India
Srivastava, P.C., Department of Physics, Indian Institute of Technology, Roorkee, 247667, India
Suzuki, T., Department of Physics, College of Humanities and Science, Nihon Univerity, Sakurajosui 3, Setagaya-ku, Tokyo, 156-8550, Japan, National Astronomical Observatory of Japan, Osawa 2, Mitaka, Tokyo, 181-8588, Japan
Funding Details: Acknowledgments AS acknowledges financial support from MHRD (Govt. of India) for her Ph.D. thesis work. Vikas Kumar acknowledges partial support from CUK.
Corresponding Author: Saxena, A.; Department of Physics, Indian Institute of TechnologyIndia; email:
Appears in Collections:Journal Publications [PH]

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