Nuclear structure in parity doublet model
저자: Myeong-Hwan Mun1, Ik Jae Shin2, Won-Gi Paeng2 , Masayasu Harada3 ,4 ,5 , Youngman Kim6 ,a
저널명: The European Physical journal A
사사: No. 2020R1A2C3006177
DOI: https://doi.org/10.1140/epja/s10050-023-01064-x
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 dou-
blet model could reproduce nuclear properties and also to
estimate the value of the chiral invariant nucleon mass m 0
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 proper-
ties 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 0 is increased
until m 0 = 700 MeV and start to deviate more from the
experiments afterwards with m 0 larger than m 0 = 700 MeV.
From this observation, we conclude that m 0 = 700 MeV
is preferred by nuclear properties. We then calculate some
properties of several selected nuclei with m 0 = 700 MeV
and compare them with experiments. Finally, we study the
neutron-proton mass difference in some nuclei.