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Nuclear structure in parity doublet model

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Title
Nuclear structure in parity doublet model
Author(s)
Mun, Myeong-Hwan; Ik Jae Shin; Won-Gi Paeng; Harada, Masayasu; Youngman Kim
Publication Date
2023-07
Journal
European Physical Journal A, v.59, no.7
Publisher
Springer Science and Business Media Deutschland GmbH
Abstract
Using an extended parity doublet model with the hidden local symmetry, we study some properties of nuclei in the mean field approximation to see if the parity doublet model could reproduce nuclear properties and also to estimate the value of the chiral invariant nucleon mass m preferred by nuclear structure. We first determine our model parameters using the inputs from free space and from nuclear matter properties. Then, we study some basic nuclear properties such as the nuclear binding energy with several different choices of the chiral invariant mass. We observe that our results approach the experimental values as m is increased until m= 700 MeV and start to deviate more from the experiments afterwards with m larger than m= 700 MeV. From this observation, we conclude that m= 700 MeV is preferred by nuclear properties. We then calculate some properties of several selected nuclei with m= 700 MeV and compare them with experiments. Finally, we study the neutron-proton mass difference in some nuclei. © 2023, The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.
URI
https://pr.ibs.re.kr/handle/8788114/14344
DOI
10.1140/epja/s10050-023-01064-x
ISSN
1434-6001
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
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